CN103675221A - Water quality detection analysis system and water quality detection analysis method - Google Patents
Water quality detection analysis system and water quality detection analysis method Download PDFInfo
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Abstract
The invention discloses a water quality detection analysis system and a water quality detection analysis method. The detection analysis method comprises the following steps: obtaining a measured value of a single water quality index in a sewage treatment station, comparing the measured value with a standard value; respectively calculating the average corrosion rate, bacteria indexes, pH value and success rate of other single water quality indexes according to the comparison result; calculating the comprehensive success rate and the comprehensive success rate of the water quality index above the level of the sewage treatment station. The detection analysis system is matched with the method. By adopting the system and the method, the water quality standard degree can be linearly represented, the processed water quality standard degree of the sewage can be accurately reflected, and the management of the sewage is facilitated. The influence on the water quality standard caused by different types of water quality indexes can be represented, and the calculation method more accords with the scientific foundation. By adopting the method and the system, the overall condition of the sewage standard of a high-level unit also can be represented, transformation, management and dose design of an oilfield sewage station also can be facilitated, and the economic benefits of oilfield production are improved.
Description
Technical field
The present invention relates to sewage treatment area, be specifically related to a kind of Water quality detected system and Water quality detected method.
Background technology
Oily water treatment and re-injection are the important guarantees of the normal production development in oil field, are also the requirements of the environmental protection of national increasingly stringent.Return water water quality detection is that check sewage treatment system of oilfield moves fine or not important method.Wherein whether probability of meeting water quality standard evaluation method is normally to move for evaluate and analyze oilfield sewage station sewage disposal system, the important appraisal tool whether sewage treatment process is suitable.
At present, oil-contaminated water of oil field probability of meeting water quality standard evaluation method is absolute value compliance rate evaluation method and water quality coincidence rate evaluation method.
Absolute value compliance rate evaluation method, as long as refer to that measured value value of being above standard of water-quality guideline judge that this water-quality guideline compliance rate is 0%, the gap of do not consider to exceed standard detected value and standard value.
The defect of this evaluation method is:
1) this evaluation method can only be from qualitative analysis water sample whether up to standard, calculate the degree that detects the index value of being above standard, can not characterize the not order of severity of overproof water quality up to standard, be unfavorable for the management to water quality.
2) indices is the same to the weight of sewage quality compliance rate general impacts, is unfavorable for like this analyzing the impact of some important indicator on water quality.
The evaluation method of water quality coincidence rate, refers to by standard value divided by detected value.
The defect of this evaluation method is that the parameter that this method obtains does not have physical significance; In addition, when water quality coincidence rate is reduced to a certain degree, the also corresponding reduction of sensitivity that measured value is changed, also thereupon loose to the calculating of probability of meeting water quality standard, the water quality result of determination obtaining, cannot accurately reflect the actual conditions of water quality.
Chinese patent CN101672778 provides a kind of water quality detection method and device.
This detection method comprises the following steps:
Step 1, the measurement irradiation water sample to be measured that light source sends, water sample to be measured sends emergent light;
Step 2, detector receives described emergent light; Use the space between gas purging water sample to be measured and detector, taken away the water smoke that water sample to be measured produces, simultaneously described gas barrier passing through of water smoke, protected detector;
Step 3, analytic unit is processed the reception signal of described detector, thereby obtains the parameter of water sample to be measured; In above-mentioned measuring process, judge whether the purge gas between water sample to be measured and detector satisfies the demand; If the determination result is YES, continue above-mentioned measurement; If the determination result is NO, isolated body is arranged between water sample to be measured and detector, stopped the water smoke that water sample to be measured produces.
This patent has mainly been described the detection method of water-quality guideline, and do not relate to the assay method to testing result, therefore this patent cannot be accurately, the compliance rate of evaluating water quality index scientifically, also cannot reflect sewage after treatment, the compliance rate intensity of variation of its water-quality guideline.
Summary of the invention
For the defect of quality evaluation method poor effect of the prior art, the invention provides a kind of Water quality detected system and Water quality detected method.
A Water quality detected method, by detecting the water-quality guideline in water sample in plant of water disposal, and carries out analyzing and processing to testing result, obtains the compliance rate of water-quality guideline;
The step of described detection method comprises,
Step 1, detects the individual event water-quality guideline in water sample described in plant of water disposal;
Testing process is to detect individual event water-quality guideline described in plant of water disposal and detect control index and the Subsidiary Index in described water sample, the measured value of acquisition individual event water-quality guideline; Described control index comprises oleaginousness, suspension content, median particle size, average corrosion rate, content of sulfate reducing bacteria, saprophytic bacteria content, iron bacteria content; Subsidiary Index comprises oxygen level, sulfur content, erosive carbon dioxide, fouling rate, iron-holder, pH value;
Project in above-mentioned water-quality guideline is from the regulation in GB SY/T 5329-94.
Step 2, judges and calculates the compliance rate of each individual event water-quality guideline;
It comprises the compliance rate that judges and calculate average corrosion rate, compliance rate, the compliance rate of pH value and the compliance rate of other single indexs of bacterium class index;
1) judgement obtains the compliance rate of average corrosion rate;
Relatively the measured value of average corrosion rate and standard value are big or small; If measured value≤standard value, the compliance rate of the average corrosion rate of described water sample is 100%; If measured value > standard value, the compliance rate of the average corrosion rate of described water sample is 0%;
Because average corrosion rate is the important indicator of harm sewage plant facility, said method symbolize this index of corrosion rate to the weight of sewage plant probability of meeting water quality standard general impacts higher than other indexs, exceeding standard is that compliance rate is 0%.
2) judge and calculate the compliance rate of bacterium class index;
Described bacterium class index comprises content of sulfate reducing bacteria, saprophytic bacteria content and iron bacteria content;
Respectively the measured value of bacterium index and standard value are taken the logarithm, then compare the size of the two; If ln measured value≤ln standard value, this water-quality guideline compliance rate is 100%; If ln standard value < ln measured value < 2 * ln standard value, calculates this water-quality guideline compliance rate according to formula (1); If ln measured value >=2 * ln standard value, this water-quality guideline compliance rate is 0%;
Due to the growth of bacterium with to detect be all index rank, therefore computing method should be calculated according to index.Otherwise if standard value is 50, measured value is 51 to be all not up to standard, has violated the scientific meaning of this index.
3) judgement obtains the compliance rate of pH value;
The size that compares pH measured value and standard value; If standard value lower limit≤measured value≤standard value upper limit, this water-quality guideline compliance rate is 100%; If the measured value > standard value upper limit, or measured value < standard value lower limit, this water-quality guideline compliance rate is 0%;
4) judge and calculate the compliance rate of other single indexs except average corrosion rate, bacterium class index and pH value;
Relatively the measured value of other single indexs and standard value are big or small; If measured value≤standard value, this water-quality guideline compliance rate is 100%; If standard value < measured value < standard value * 2, calculate this water-quality guideline compliance rate according to formula (2); If measured value >=standard value * 2, this water-quality guideline compliance rate is 0%;
In above-mentioned comparison procedure, the standard value of indices is all according to the standard formulation in national standard or oil field oneself.
Step 3, asks for the integrated criterion ratio R of water sample described in plant of water disposal
1;
According to formula (3), calculate the integrated criterion ratio R of water sample described in single plant of water disposal
1;
Wherein, N
ifor the compliance rate of each water-quality guideline in single plant of water disposal, the number of entry that n is water-quality guideline, n is natural number, and the span of n is 1～13;
Step 4, the integrated criterion ratio R of the calculating above rank unit of plant of water disposal water-quality guideline
j;
The above rank unit of plant of water disposal is followed successively by oil recovery ore deposit, oil recovery factory and oil field from low to high; Wherein, plant of water disposal is the subordinate unit at the corresponding levels in oil recovery ore deposit, the subordinate unit at the corresponding levels of oil recovery Kuang Wei oil recovery factory, the subordinate unit at the corresponding levels that oil recovery factory is oil field;
Utilize flowmeter to detect respectively in subordinate unit at the corresponding levels the total Water Q of water sample described in each
i, according to formula (4), calculate the integrated criterion ratio R of water sample described in each subordinate unit at the corresponding levels
j-1weighted mean value, obtain the integrated criterion ratio R of the above rank unit of plant of water disposal water-quality guideline
j;
Wherein, j is natural number, and its value is 2-4; R
1be the integrated criterion ratio of water sample described in the single plant of water disposal of trying to achieve in step 3, Q
ifor the water yield of the described water sample of the described subordinate unit of the corresponding levels, m be at the corresponding levels under the number of subordinate unit, m is natural number, m>=1;
" unit " relating to herein refers to units at different levels in oil field, rank is respectively from low to high: plant of water disposal, oil recovery ore deposit, oil recovery factory and oil field, plant of water disposal is the unit that rank is minimum, it detects water-quality guideline, and with adopting formula (3) to calculate the water quality integrated criterion ratio of plant of water disposal, the above rank unit of plant of water disposal is all the probability of meeting water quality standard that the probability of meeting water quality standard that gathers subordinate unit of unit at the corresponding levels by formula (4) forms unit at the corresponding levels.For example certain plant of water disposal has detected 13 indexs, by formula (3), calculated the probability of meeting water quality standard of plant of water disposal, then certain oil recovery ore deposit of this plant of water disposal higher level, the compliance rate that gathers the beneath several plant of water disposal in oil recovery ore deposit by formula (4), thereby form the integrated criterion ratio in certain oil recovery ore deposit, certain oil recovery factory of then recovering the oil more than ore deposit, by formula (4), gather the recover the oil compliance rate in ore deposit of oil recovery factory subordinate, thereby form the integrated criterion ratio of this oil recovery factory, oil field more than oil recovery factory is also like this.
Step 5, analyzes output step;
By in plant of water disposal described in each measured value of single index in water sample, the integrated criterion ratio analysis output statistical study of the compliance rate of single index and units at different levels water sample, analyze and export sewage after treatment, the compliance rate intensity of variation of its water-quality guideline.
In the testing process of described step 1, adopt microporous membrane filtration test instrument to detect suspension content, detection method is filter membrane filtration method: adopt Ku Erte particle collector to detect median particle size; Adopt spectrophotometer to detect oleaginousness, detection method is colourimetry; Adopt corrosion coupon to detect average corrosion rate, detection method is hanging slice method; Adopt culture flask detecting the contet of sulphate reducing bacteria content, saprophytic bacteria content and iron bacteria content, detection method is disappearance dilution method; Adopt Standard Test Equipment to detect oxygen level, detection method is iodimetric titration; Adopt Standard Test Equipment to detect sulfur content, detection method is methylenum careuleum colourimetry; Adopt and survey iron pipe detection iron-holder; Adopt fouling lacing film to detect fouling rate, detection method is hanging slice method.Adopt Standard Test Equipment to detect erosive carbon dioxide, detection method is hydrochloric titration.
Detection analytic system of the present invention is used for by detecting the water-quality guideline of water sample described in plant of water disposal, and testing result is carried out to analyzing and processing, obtains the compliance rate of water-quality guideline;
Described detection analytic system comprises: detect the individual event water-quality guideline module in water sample described in plant of water disposal, judge and calculate the compliance rate module of each individual event water-quality guideline, ask for the integrated criterion ratio R of water sample described in plant of water disposal
1module, calculates the integrated criterion ratio R of water-quality guideline described in the above rank unit of plant of water disposal
jmodule and analysis output module; Individual event water-quality guideline module described in described detection plant of water disposal in water sample is for detection of each individual event water-quality guideline in plant of water disposal; And Output rusults is inputed to described judgement and calculates the compliance rate module of each individual event water-quality guideline, for calculate the compliance rate of each single index and result is exported to described in ask for the integrated criterion ratio R of water sample described in plant of water disposal
1module, asks for the integrated criterion ratio of the water-quality guideline in each plant of water disposal; The integrated criterion ratio R of the above rank unit of described calculating plant of water disposal water-quality guideline
jmodule is according to the integrated criterion ratio R that asks for water sample described in plant of water disposal
1the Output rusults of module obtains the integrated criterion ratio of the above rank unit of plant of water disposal; Described analysis output module is for exporting the interpretation of result of above-mentioned modules;
Wherein, described in described detection plant of water disposal, the individual event water-quality guideline module in water sample comprises detecting unit; Described detecting unit, for detection of control index and Subsidiary Index in water sample described in plant of water disposal, obtains the measured value of individual event water-quality guideline; Described control index comprises oleaginousness, suspension content, median particle size, average corrosion rate, content of sulfate reducing bacteria, saprophytic bacteria content, iron bacteria content; Subsidiary Index comprises oxygen level, sulfur content, erosive carbon dioxide, fouling rate, iron-holder, pH value;
Described judgement the compliance rate module of calculating each individual event water-quality guideline comprise compliance rate unit, the compliance rate unit of bacterium class index, the compliance rate unit of the compliance rate unit of pH value and other single indexs that judges and calculate average corrosion rate;
1) the compliance rate unit that described judgement obtains average corrosion rate is for comparing measured value and the standard value size of average corrosion rate; If measured value≤standard value, the compliance rate of the average corrosion rate of described water sample is 100%; If measured value > standard value, the compliance rate of the average corrosion rate of described water sample is 0%;
2) described judgement the compliance rate unit that calculates bacterium class index are for calculating the compliance rate of each bacterium class index, and wherein said bacterium class index comprises content of sulfate reducing bacteria, saprophytic bacteria content and iron bacteria content;
Respectively the measured value of bacterium index and standard value are taken the logarithm, then compare the size of the two; If ln measured value≤ln standard value, this water-quality guideline compliance rate is 100%; If ln standard value < ln measured value < 2 * ln standard value, calculates this water-quality guideline compliance rate according to formula (1); If ln measured value >=2 * ln standard value, this water-quality guideline compliance rate is 0%;
3) the compliance rate unit that described judgement obtains pH value is for comparing the size of pH measured value and standard value; If standard value lower limit≤measured value≤standard value upper limit, this water-quality guideline compliance rate is 100%; If the measured value > standard value upper limit, or measured value < standard value lower limit, this water-quality guideline compliance rate is 0%;
4) the compliance rate unit of described judgement other single indexs of calculating except average corrosion rate, bacterium class index and pH value is for comparing measured value and the standard value size of other single indexs; If measured value≤standard value, this water-quality guideline compliance rate is 100%; If standard value < measured value < standard value * 2, calculate this water-quality guideline compliance rate according to formula (2); If measured value >=standard value * 2, this water-quality guideline compliance rate is 0%;
The described integrated criterion ratio R that asks for water sample
1module is for calculating the integrated criterion ratio of water sample described in plant of water disposal;
According to formula (3), calculate the integrated criterion ratio R of water sample described in single plant of water disposal
1;
Wherein, N
ifor the compliance rate of water-quality guideline described in each in single plant of water disposal, the number of entry that n is water-quality guideline, n is natural number, and the span of n is 1～13;
The above rank unit of plant of water disposal is followed successively by oil recovery ore deposit, oil recovery factory and oil field from low to high; Wherein, plant of water disposal is the subordinate unit at the corresponding levels in oil recovery ore deposit, the subordinate unit at the corresponding levels of oil recovery Kuang Wei oil recovery factory, the subordinate unit at the corresponding levels that oil recovery factory is oil field; The integrated criterion ratio R of the above rank unit of described calculating plant of water disposal water-quality guideline
jmodule is for utilizing flowmeter to detect respectively the total Water Q of water sample described in subordinate unit at the corresponding levels
i, according to formula (4), calculate the integrated criterion ratio R of water sample described in each subordinate unit at the corresponding levels
j-1weighted mean value, obtain the integrated criterion ratio R of water-quality guideline described in the above rank unit of plant of water disposal
j;
Wherein, j is natural number, and its value is 2-4; R
1be the integrated criterion ratio of water sample described in the single plant of water disposal of trying to achieve in step 3, Q
ifor the water yield of the described water sample of the described subordinate unit of the corresponding levels, m be at the corresponding levels under the number of subordinate unit, m is natural number, m>=1;
Described analysis output module is for exporting statistical study by the integrated criterion ratio analysis of water sample described in the measured value of single index in each water sample of described plant of water disposal, the compliance rate of single index and unit at different levels, analyze and export sewage after treatment, the compliance rate intensity of variation of its water-quality guideline.
As shown in Figure 2, this figure will adopt Water quality detected method of the present invention and the absolute value compliance rate method of available technology adopting and the water quality detection result that water quality coincidence rate method obtains to collect on a figure respectively, represented that working as standard value is 10, in the time of detected value from 8 to 26, the change curve of the compliance rate that three kinds of detection methods calculate.
From figure, obviously can find out, adopt the evaluation method of absolute value compliance rate can only be from qualitative analysis water sample whether up to standard, do not calculate the degree that detects the index value of being above standard, can not characterize the not order of severity of overproof water quality up to standard, be unfavorable for the management to water quality.
And the evaluation method of employing water quality coincidence rate, after water-quality guideline is reduced to a certain degree, the sensitivity that measured value changes also decreases, and the calculating of probability of meeting water quality standard is also thereupon loose, cannot accurately reflect the actual conditions of water quality the water quality result of determination obtaining.
And adopt Water quality detected method of the present invention, there is following advantage:
1) the present invention can characterize by linearity the degree of overproof water quality, and can reflect exactly sewage water quality reaching standard degree after treatment, through water quality, transform and strengthen management, if water-quality guideline promotes, but also do not have up to standard, on probability of meeting water quality standard, still can show the raising of water quality, be conducive to management.
2) the present invention can characterize the impact of dissimilar water-quality guideline on probability of meeting water quality standard, the impact of the water-quality guideline that can reflect weighted on final water quality result of determination, and computing method more meet scientific basis.
3) the present invention can symbolize the overall condition of superior unit sewage compliance rate, is conducive to the improvement project technology path evaluation of oilfield sewage station and the normal operational management of sewage plant and chemical feeding quantity design, improves the economic benefit of field produces.
Accompanying drawing explanation
Fig. 1 is the FB(flow block) of detection method of the present invention;
Fig. 2 is for adopting the probability of meeting water quality standard comparison diagram of the present invention and prior art evaluation method;
Below in conjunction with the drawings and specific embodiments, the present invention is described in more detail, protection scope of the present invention is not limited to following embodiment.
Embodiment
As shown in Figure 1, a kind of Water quality detected method, it comprises the steps,
Step 1, detects the individual event water-quality guideline in water sample described in plant of water disposal.
Testing process is to detect control index and Subsidiary Index in water sample described in plant of water disposal, the measured value of acquisition individual event water-quality guideline; Described control index comprises oleaginousness, suspension content, median particle size, average corrosion rate, content of sulfate reducing bacteria, saprophytic bacteria content, iron bacteria content; Subsidiary Index comprises oxygen level, sulfur content, erosive carbon dioxide, fouling rate, iron-holder, pH value.
In testing process, adopt microporous membrane filtration test instrument to detect suspension content, detection method is filter membrane filtration method: adopt Ku Erte particle collector to detect median particle size; Adopt spectrophotometer to detect oleaginousness, detection method is colourimetry; Adopt corrosion coupon to detect average corrosion rate, detection method is hanging slice method; Adopt culture flask detecting the contet of sulphate reducing bacteria content, saprophytic bacteria content and iron bacteria content, detection method is disappearance dilution method; Adopt Standard Test Equipment to detect oxygen level, detection method is iodimetric titration; Adopt Standard Test Equipment to detect sulfur content, detection method is methylenum careuleum colourimetry; Adopt and survey iron pipe detection iron-holder; Adopt fouling lacing film to detect fouling rate, detection method is hanging slice method.Adopt Standard Test Equipment to detect erosive carbon dioxide, detection method is hydrochloric titration.
By above-mentioned detection method, obtain the measured value of individual event water-quality guideline.
Step 2, judges and calculates the compliance rate of each individual event water-quality guideline.
It comprises the compliance rate that judges and calculate average corrosion rate, compliance rate, the compliance rate of pH value and the compliance rate of other single indexs of bacterium index.
1) judgement obtains the compliance rate of average corrosion rate.
Relatively the measured value of average corrosion rate and standard value are big or small; If measured value≤standard value, the compliance rate of the average corrosion rate of described water sample is 100%; If measured value > standard value, the compliance rate of the average corrosion rate of described water sample is 0%.
2) judge and calculate the compliance rate of bacterium index.
Described bacterium class index comprises content of sulfate reducing bacteria, saprophytic bacteria content and iron bacteria content;
Respectively the measured value of bacterium index and standard value are taken the logarithm, then compare the size of the two; If ln measured value≤ln standard value, this water-quality guideline compliance rate is 100%; If ln standard value < ln measured value < 2 * ln standard value, calculates this water-quality guideline compliance rate according to formula (1); If ln measured value >=2 * ln standard value, this water-quality guideline compliance rate is 0%.
3) judgement obtains the compliance rate of pH value.
The size that compares pH measured value and standard value; If standard value lower limit≤measured value≤standard value upper limit, this water-quality guideline compliance rate is 100%; If the measured value > standard value upper limit, or measured value < standard value lower limit, this water-quality guideline compliance rate is 0%.
4) judge and calculate the compliance rate of other single indexs except average corrosion rate, bacterium class index and pH value.
Relatively the measured value of other single indexs and standard value are big or small; If measured value≤standard value, this water-quality guideline compliance rate is 100%; If standard value < measured value < standard value * 2, calculate this water-quality guideline compliance rate according to formula (2); If measured value >=standard value * 2, this water-quality guideline compliance rate is 0%.
In above-mentioned comparison procedure, the standard value of indices is all according to the standard formulation in national standard or oil field oneself.
Step 3, asks for the integrated criterion ratio R of water sample described in plant of water disposal
1.
According to formula (3), calculate the integrated criterion ratio R of water sample in single plant of water disposal
1.
Wherein, N
ifor the compliance rate of each water-quality guideline in single plant of water disposal, the number of entry that n is water-quality guideline, n is natural number, n=13.
Step 4, the integrated criterion ratio R of the calculating above rank unit of plant of water disposal water-quality guideline
j.
The above rank unit of plant of water disposal is followed successively by oil recovery ore deposit, oil recovery factory and oil field from low to high; Wherein, plant of water disposal is the subordinate unit at the corresponding levels in oil recovery ore deposit, the subordinate unit at the corresponding levels of oil recovery Kuang Wei oil recovery factory, the subordinate unit at the corresponding levels that oil recovery factory is oil field;
Utilize flowmeter to detect respectively in subordinate unit at the corresponding levels the water yield Q of water sample described in each
i, according to formula (4), calculate the integrated criterion ratio R of water sample described in each subordinate unit at the corresponding levels
j-1weighted mean value, obtain the integrated criterion ratio R of the above rank unit of plant of water disposal water-quality guideline
j.
Wherein, j is natural number, and its value is 2-4; R
1be the integrated criterion ratio of water sample described in the single plant of water disposal of trying to achieve in step 3, Q
ifor the water yield of the described water sample of the described subordinate unit of the corresponding levels, m be at the corresponding levels under the number of subordinate unit, m is natural number, m=20;
Step 5, analyzes output step.
By in plant of water disposal described in each measured value of single index in each water sample, the compliance rate of single index, the integrated criterion ratio analysis output statistical study of the integrated criterion ratio of described water sample and the above rank unit of plant of water disposal, analyze and export sewage after treatment, the compliance rate intensity of variation of its water-quality guideline.
Embodiment
Effluent quality index after application this method is processed certain oilfield sewage station detects, and testing result is as shown in table 1.
Table 1
Wherein, SRB is content of sulfate reducing bacteria, and TGB is saprophytic bacteria content.Oleaginousness, suspension content, oxygen level, sulfur content, iron-holder unit are mg/L, and SRB, TGB, iron bacteria content unit are individual/ml, and median particle size unit is μ m, and average corrosion rate, fouling rate unit are mm/, pHZhi Wu unit.
Utilize the compliance rate of each water-quality guideline that formula 1 and formula (2) calculate as shown in table 2, unit is mg/L.
Table 2
Wherein, SRB is content of sulfate reducing bacteria, and TGB is saprophytic bacteria content.Oleaginousness, suspension content, oxygen level, sulfur content, iron-holder unit are mg/L, and SRB, TGB, iron bacteria content unit are individual/ml, and median particle size unit is μ m, and average corrosion rate, fouling rate unit are mm/, pHZhi Wu unit.
According to the integrated criterion ratio R of calculate described in plant of water disposal=water sample of formula (3)
1;
R
1＝（80％＋87.5％＋100％＋0％＋75％＋62％＋0％＋50％＋75％＋50％＋100％＋100％）/12＝64.95％；
Adopt absolute value compliance rate method to calculate the compliance rate of water quality, its result is as shown in table 3, and unit is mg/L.
Table 3
Wherein, SRB is content of sulfate reducing bacteria, and TGB is saprophytic bacteria content.Oleaginousness, suspension content, oxygen level, sulfur content, iron-holder unit are mg/L, and SRB, TGB, iron bacteria content unit are individual/ml, and median particle size unit is μ m, and average corrosion rate, fouling rate unit are mm/, pHZhi Wu unit.
Absolute value compliance rate evaluation method cannot be calculated pH value, so n=11; According to formula (3), calculate the integrated criterion ratio R of this water sample
1;
R
1＝（0％＋0％＋100％＋0％＋0％＋0％＋100％＋0％＋0％＋0％＋100％）/11＝27.3％；
Adopt water quality coincidence rate method to calculate the compliance rate of water quality, its result is as shown in table 4, and unit is mg/L.
Table 4
Wherein, SRB is content of sulfate reducing bacteria, and TGB is saprophytic bacteria content.Oleaginousness, suspension content, oxygen level, sulfur content, iron-holder unit are mg/L, and SRB, TGB, iron bacteria content unit are individual/ml, and median particle size unit is μ m, and average corrosion rate, fouling rate unit are mm/, pHZhi Wu unit.
Water quality coincidence rate evaluation method cannot be calculated pH value, so n=11, calculates the integrated criterion ratio R of this water sample according to formula (3)
1;
R
1＝（83％＋88.9％＋100％＋92.7％＋10％＋6.7％＋100％＋66.7％＋80％＋66.7％＋100％）/11＝72.6％；
Technique scheme is one embodiment of the present invention, for those skilled in the art, the invention discloses on the basis of application process and principle, be easy to make various types of improvement or distortion, and be not limited only to the described structure of the above-mentioned embodiment of the present invention, therefore previously described mode is preferably, and does not have restrictive meaning.
Claims (3)
1. a Water quality detected method, is characterized in that:
Described detection method passes through to detect the water-quality guideline of water sample in plant of water disposal, and testing result is carried out to analyzing and processing, obtains the compliance rate of water-quality guideline;
The step of described detection method comprises,
Step 1, detects the individual event water-quality guideline in water sample described in plant of water disposal;
Testing process is to detect individual event water-quality guideline described in plant of water disposal and detect control index and the Subsidiary Index in described water sample, the measured value of acquisition individual event water-quality guideline; Described control index comprises oleaginousness, suspension content, median particle size, average corrosion rate, content of sulfate reducing bacteria, saprophytic bacteria content, iron bacteria content; Subsidiary Index comprises oxygen level, sulfur content, erosive carbon dioxide, fouling rate, iron-holder, pH value;
Step 2, judges and calculates the compliance rate of each individual event water-quality guideline;
It comprises the compliance rate that judges and calculate average corrosion rate, compliance rate, the compliance rate of pH value and the compliance rate of other single indexs of bacterium class index;
1) judgement obtains the compliance rate of average corrosion rate;
Relatively the measured value of average corrosion rate and standard value are big or small; If measured value≤standard value, the compliance rate of the average corrosion rate of described water sample is 100%; If measured value > standard value, the compliance rate of the average corrosion rate of described water sample is 0%;
2) judge and calculate the compliance rate of bacterium class index;
Described bacterium class index comprises content of sulfate reducing bacteria, saprophytic bacteria content and iron bacteria content;
Respectively the measured value of bacterium index and standard value are taken the logarithm, then compare the size of the two; If ln measured value≤ln standard value, this water-quality guideline compliance rate is 100%; If ln standard value < ln measured value < 2 * ln standard value, calculates this water-quality guideline compliance rate according to formula (1); If ln measured value >=2 * ln standard value, this water-quality guideline compliance rate is 0%;
3) judgement obtains the compliance rate of pH value;
The size that compares pH measured value and standard value; If standard value lower limit≤measured value≤standard value upper limit, this water-quality guideline compliance rate is 100%; If the measured value > standard value upper limit, or measured value < standard value lower limit, this water-quality guideline compliance rate is 0%;
4) judge and calculate the compliance rate of other single indexs except average corrosion rate, bacterium class index and pH value;
Relatively the measured value of other single indexs and standard value are big or small; If measured value≤standard value, this water-quality guideline compliance rate is 100%; If standard value < measured value < standard value * 2, calculate this water-quality guideline compliance rate according to formula (2); If measured value >=standard value * 2, this water-quality guideline compliance rate is 0%;
Step 3, asks for the integrated criterion ratio R of water sample described in single plant of water disposal
1; According to formula (3), calculate the integrated criterion ratio R of water sample described in single plant of water disposal
1;
Wherein, N
ifor the compliance rate of each water-quality guideline in plant of water disposal, the number of entry that n is water-quality guideline, n is natural number, and the span of n is 1～13;
Step 4, the integrated criterion ratio R of the calculating above rank unit of plant of water disposal water-quality guideline
j;
The above rank unit of plant of water disposal is followed successively by oil recovery ore deposit, oil recovery factory and oil field from low to high; Wherein, plant of water disposal is the subordinate unit at the corresponding levels in oil recovery ore deposit, the subordinate unit at the corresponding levels of oil recovery Kuang Wei oil recovery factory, the subordinate unit at the corresponding levels that oil recovery factory is oil field;
Utilize flowmeter to detect the total Water Q of water sample described in subordinate unit at the corresponding levels
i, according to formula (4), calculate the integrated criterion ratio R of water sample described in each subordinate unit at the corresponding levels
j-1weighted mean value, obtain the integrated criterion ratio R of the above rank unit of plant of water disposal water-quality guideline
j, i.e. the integrated criterion ratio R of unit at the corresponding levels water-quality guideline
j;
Wherein, j is natural number, and its value is 2-4; Q
ifor the water yield of the described water sample of the described subordinate unit of the corresponding levels, m be at the corresponding levels under the number of subordinate unit, m is natural number, m>=1;
Step 5, analyzes output step;
By in plant of water disposal described in each measured value of single index in water sample, the integrated criterion ratio analysis of water sample output statistical study described in the compliance rate of single index and unit at different levels, analyze and export sewage after treatment, the compliance rate intensity of variation of its water-quality guideline.
2. a kind of Water quality detected method according to claim 1, is characterized in that:
In the testing process of described step 1, adopt microporous membrane filtration test instrument to detect suspension content, detection method is filter membrane filtration method: adopt Ku Erte particle collector to detect median particle size; Adopt spectrophotometer to detect oleaginousness, detection method is colourimetry; Adopt corrosion coupon to detect average corrosion rate, detection method is hanging slice method; Adopt culture flask detecting the contet of sulphate reducing bacteria content, saprophytic bacteria content and iron bacteria content, detection method is disappearance dilution method; Adopt Standard Test Equipment to detect oxygen level, detection method is iodimetric titration; Adopt Standard Test Equipment to detect sulfur content, detection method is methylenum careuleum colourimetry; Adopt and survey iron pipe detection iron-holder; Adopt fouling lacing film to detect fouling rate, detection method is hanging slice method; Adopt Standard Test Equipment to detect erosive carbon dioxide, detection method is hydrochloric titration.
3. according to the analytical approach of claim 1-2, detect the system of analyzing, it is characterized in that:
Described detection analytic system is used for by detecting the water-quality guideline of water sample described in plant of water disposal, and testing result is carried out to analyzing and processing, obtains the compliance rate of water-quality guideline;
Described detection analytic system comprises: detect the individual event water-quality guideline module of water sample described in plant of water disposal, judge and calculate the compliance rate module of each individual event water-quality guideline, ask for the integrated criterion ratio R of water sample described in plant of water disposal
1module, the integrated criterion ratio R of the calculating above rank unit of plant of water disposal water-quality guideline
jmodule and analysis output module; Individual event water-quality guideline module described in described detection plant of water disposal in water sample is for detection of each individual event water-quality guideline in plant of water disposal; And Output rusults is inputed to described judgement and calculates the compliance rate module of each individual event water-quality guideline, for calculate the compliance rate of each single index and result is exported to described in ask for the integrated criterion ratio R of water sample described in plant of water disposal
1module, asks for integrated criterion ratio; The integrated criterion ratio R of the above rank unit of described calculating plant of water disposal water-quality guideline
jmodule is according to the integrated criterion ratio R that asks for water sample described in plant of water disposal
1the Output rusults of module obtains the integrated criterion ratio of the above rank unit of plant of water disposal; Described analysis output module is for exporting the interpretation of result of above-mentioned modules;
Wherein, the individual event water-quality guideline module of water sample described in described detection plant of water disposal comprises detecting unit; Described detecting unit, for detection of control index and Subsidiary Index in water sample described in plant of water disposal, obtains the measured value of individual event water-quality guideline; Described control index comprises oleaginousness, suspension content, median particle size, average corrosion rate, content of sulfate reducing bacteria, saprophytic bacteria content, iron bacteria content; Subsidiary Index comprises oxygen level, sulfur content, erosive carbon dioxide, fouling rate, iron-holder, pH value;
Described judgement the compliance rate module of calculating each individual event water-quality guideline comprise compliance rate unit, the compliance rate unit of bacterium class index, the compliance rate unit of the compliance rate unit of pH value and other single indexs that judges and calculate average corrosion rate;
1) the compliance rate unit that described judgement obtains average corrosion rate is for comparing measured value and the standard value size of average corrosion rate; If measured value≤standard value, the compliance rate of the average corrosion rate of described water sample is 100%; If measured value > standard value, the compliance rate of the average corrosion rate of described water sample is 0%;
2) described judgement the compliance rate unit that calculates bacterium class index are for calculating the compliance rate of each bacterium class index, and wherein said bacterium class index comprises content of sulfate reducing bacteria, saprophytic bacteria content and iron bacteria content;
Respectively the measured value of bacterium index and standard value are taken the logarithm, then compare the size of the two; If ln measured value≤ln standard value, this water-quality guideline compliance rate is 100%; If ln standard value < ln measured value < 2 * ln standard value, calculates this water-quality guideline compliance rate according to formula (1); If ln measured value >=2 * ln standard value, this water-quality guideline compliance rate is 0%;
3) the compliance rate unit that described judgement obtains pH value is for comparing the size of pH measured value and standard value; If standard value lower limit≤measured value≤standard value upper limit, this water-quality guideline compliance rate is 100%; If the measured value > standard value upper limit, or measured value < standard value lower limit, this water-quality guideline compliance rate is 0%;
4) the compliance rate unit of described judgement other single indexs of calculating except average corrosion rate, bacterium class index and pH value is for comparing measured value and the standard value size of other single indexs; If measured value≤standard value, this water-quality guideline compliance rate is 100%; If standard value < measured value < standard value * 2, calculate this water-quality guideline compliance rate according to formula (2); If measured value >=standard value * 2, this water-quality guideline compliance rate is 0%;
The described integrated criterion ratio R that asks for water sample
1module is for calculating the integrated criterion ratio of water sample described in plant of water disposal;
According to formula (3), calculate the integrated criterion ratio R of water sample described in single plant of water disposal
1;
Wherein, N
ifor the compliance rate of water-quality guideline described in individual event in plant of water disposal, the number of entry that n is water-quality guideline, n is natural number, and the span of n is 1～13;
The above rank unit of plant of water disposal is followed successively by oil recovery ore deposit, oil recovery factory and oil field from low to high; Wherein, plant of water disposal is the subordinate unit at the corresponding levels in oil recovery ore deposit, the subordinate unit at the corresponding levels of oil recovery Kuang Wei oil recovery factory, the subordinate unit at the corresponding levels that oil recovery factory is oil field; The integrated criterion ratio R of the above rank unit of described calculating plant of water disposal water-quality guideline
jmodule is for utilizing flowmeter to detect respectively the total Water Q of water sample described in subordinate unit at the corresponding levels
i, according to formula (4), calculate the weighted mean value of the integrated criterion ratio of water sample described in each subordinate unit at the corresponding levels, obtain the integrated criterion ratio R of water-quality guideline described in the above rank unit of plant of water disposal
j;
Wherein, wherein, j is natural number, and its value is 2-4; Q
ifor the water yield of the described water sample of the described subordinate unit of the corresponding levels, m be at the corresponding levels under the number of subordinate unit, m is natural number, m>=1;
Described analysis output module is used for the measured value of single index in each water sample of described plant of water disposal, the compliance rate of single index, the integrated criterion ratio analysis of water sample output statistical study described in units at different levels, analyze and export sewage after treatment, the compliance rate intensity of variation of its water-quality guideline.
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| CN108982186A (en) * | 2018-09-06 | 2018-12-11 | 邢振华 | A kind of alloy and detection method for tubular steam boiler water quality detection |
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