CN108314264A - A kind of cost-efficiently sanitary wastewater processing method - Google Patents

A kind of cost-efficiently sanitary wastewater processing method Download PDF

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Publication number
CN108314264A
CN108314264A CN201810177106.7A CN201810177106A CN108314264A CN 108314264 A CN108314264 A CN 108314264A CN 201810177106 A CN201810177106 A CN 201810177106A CN 108314264 A CN108314264 A CN 108314264A
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water
processing
stalk
cost
clay
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CN201810177106.7A
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李嘉顺
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李嘉顺
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Priority to CN201810177106.7A priority Critical patent/CN108314264A/en
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water, or sewage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28002—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
    • B01J20/28004—Sorbent size or size distribution, e.g. particle size
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/28016—Particle form
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2220/00—Aspects relating to sorbent materials
    • B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
    • B01J2220/48—Sorbents characterised by the starting material used for their preparation
    • B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
    • B01J2220/485—Plants or land vegetals, e.g. cereals, wheat, corn, rice, sphagnum, peat moss
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/24—Treatment of water, waste water, or sewage by flotation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/30—Treatment of water, waste water, or sewage by irradiation
    • C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultra-violet light
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/04—Disinfection
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • C02F3/342—Biological treatment of water, waste water, or sewage characterised by the microorganisms used characterised by the enzymes used

Abstract

A kind of cost-efficiently sanitary wastewater processing method of the present invention, this approach includes the following steps：Waste water is filtered first, remove suspension particle, then into the separator of water-oil separating, foam is isolated by air-blowing, and then physical method handles the surfactant in waste water except defoaming with this, then lower water column the physical absorbent stage is entered to adsorb, stalk and clay carbide is selected to make adsorbent, adsorption efficiency is higher, and it is of low cost, antivirus processing and then is carried out to water body with ultraviolet lamp, water body is clarified finally by ferment, filtering, obtains purgeable water body.Adsorbent of the present invention is selected from the mixture of stalk and clay, derives from a wealth of sources, is of low cost, and large specific surface area, adsorption efficiency is higher, and treatment method is easy, technological process is simple, does not generate waste, processing cost is relatively low.

Description

A kind of cost-efficiently sanitary wastewater processing method
Technical field
The present invention relates to field of waste water treatment, more particularly to a kind of sanitary wastewater processing method of high efficiency, low cost.
Background technology
With our economic fast developments, domestic consumption is all in gradually incremental, the wastewater flow rate excluded therewith at present It is being continuously increased.Due to the complexity of domestic water, in these sanitary wastewaters, all contain graininess impurity, protein mostly Harmful magazine such as substance, greasy dirt, surfactant, bacterium.In order to protect the environment being increasingly destroyed, it is necessary to these lives Waste water carries out purified treatment.
Existing sanitary wastewater purification method mainly has flocculence, microbial degradation method, physisorphtion etc..Flocculation sediment Method is to carry out purifying water body by a large amount of flocculant of boss by the method that the absorption of flocculant, physics settle, then flocculate Agent often higher price, and selection aluminium salt, aluminium is difficult often cleared, leads to secondary pollution；Microbial degradation method is selected different Microorganism the organic matter in waste water is decomposed, flow is complicated, management difficulty is high, effect is unstable, is finally difficult to ensure Water quality it is up to standard；And physisorphtion, since its cost of investment is low, operation and maintenance cost is relatively low, physical absorbent can recycle The features such as use, be study more wastewater treatment method at present, but often using more expensive physical absorbent, cause waste water Processing cost is higher.
Invention content
The present invention be directed to above-mentioned waste water physisorphtion, that there are physics adsorbent costs is higher, operating cost is higher etc. asks A kind of technical solution inscribed and proposed.
The technical scheme is that：A kind of cost-efficiently sanitary wastewater processing method, by by common stalk Adsorbent is prepared with clay high temperature carbonization, surfactant, protein, oil in sanitary wastewater are removed by physisorption The features such as dirt etc., adsorbent derives from a wealth of sources, effect is preferable, cost is relatively low.
The processing method of specific sanitary sewage involved in the present invention is：
A. sanitary wastewater is introduced into grille well, is filtered by mechanical fine fack, particulate matter or floating class object in filtered wastewater Matter, grid slag concentrate periodically outward transport；
The grid gap is 2-5 um, and grid slag carries out weekly cleaning 1-2 times；
B. the waste water in step 1 is introduced into be loaded into foam separating tower and carries out bubbling processing, and detach foam, sub-cloud life Waste water.
Due to usually containing a large amount of various emulsifiers in sanitary wastewater, these emulsifiers with surface-active are for a long time It is present in water body so that sanitary wastewater forms relatively stable oil-in-water emulsion.Since emulsifier is with very strong Surface-active, after liquid generates blistering, emulsifier can be concentrated on gas-liquid interface, is collected to foam, can drop significantly The content of emulsifier in low waste water, to substantially reducing the emulsifiability of sanitary wastewater, oil-in-water system is disintegrated, oil phase and Aqueous phase separation is convenient for the processing of follow-up greasy dirt.
The gas and waste water ratio is 6:1-8:1, foam is once collected every 10-30 minutes, every time weight It is 3-8 times multiple.
C. by the lower water column in step 2 by adsorption tank, under high velocity agitation, adsorbent being added, carrying out high-speed stirring It mixes, speed of agitator is controlled at 500-1000 revs/min, after being kept for 1-2 hours, filters out filter residue, processed water body carries out down One step processing procedure.
The adsorbent is prepared by the mixture of the stalk and clay that recycle by high temperature carbonization, the recycling Stalk includes the stalks such as corn, peanut, wheat, soya bean of recycling, have the characteristics that it is of low cost, derive from a wealth of sources, by high temperature After charing, porous carbon structure can be formed, there is suction-operated to many kinds of substance；The clay, which is selected from, contains magnesium/aluminium The substance of equal multilayered structures is to come from crude, and cost is relatively low, after mixing stalk and clay, by pyrocarbon Change, the higher porous structure of intensity that can form more empty carbon structures with clay, more hollow structures have large specific surface area, absorption The features such as ability is strong.
The weight ratio of the stalk and clay is controlled 10:1-30:Between 1, adsorbate after charing with it is pending Water body weight ratio control 1:100-1:Between 250.
The preparation method of the stalk and clay is：After mixing by stalk and clay, it is added in retort, charcoal Change temperature control between 560-680 DEG C, after carbonizing 3-5 hours, takes out, be ground between grain size 10-50um；
The filter residue is by the mixture of the elements such as nitrogenous, phosphorous in stalk and clay carbide adsorbed water body, and filter residue can As good fertilizer, to realize the recycling of adsorbent, while reducing the cost of wastewater treatment.
D. the water body in step 3 is introduced into sterilization pool the processing that carries out disinfection；
Common water body disinfection method includes chemical method and Physical, and chemical method is usually handled water body using oxidizing process, For example the oxides such as hydrogen peroxide, chlorine, sodium hypochlorite are selected, but often cost is higher, and cause in water body containing a large amount of Chemical substance, taste is very big in processing procedure, and prodigious influence is caused on ambient enviroment.
The preferred ultraviolet lamp of disinfection way of the present invention sterilizes water body, and ultraviolet lamp selects wavelength is 254, Two kinds of 365nm, ultraviolet disinfection time are 2-5 hours；
E. ferment processing is carried out to the water body in step 4, after 1-2 hours pending, used membrane filtration water body is prepared recyclable Purified water；
The filter membrane diameter was replaced primary in 2-5um every 10 hours；
Compared with prior art, the present invention has the following effects that：
For the present invention using sanitary wastewater is handled the step of filtering-bubbling foam removal-physical absorption-disinfection-filtering, it is useless that treated Water can direct emission, this method treatment effeciency is high, non-secondary pollution, and in processing procedure, the adsorbent of use derives from a wealth of sources, at This relatively low, asepsis environment-protecting, and filter residue can regard Crop fertilizer, thus the cost of adsorbent is substantially reduced, it is useless to reduce The cost of water process.
On the other hand, the present invention has porous knot using the carbide of recycling stalk and clay mixture as adsorbent Structure, large specific surface area, adsorption capacity are strong, can adsorb the ingredients such as phosphorous-nitrogenous, protein in waste water, and its source at Originally, cost is relatively low, is in addition disinfecting link, is selecting more environmentally-friendly ultraviolet light to sterilize water body, avoid chemicals The negative effect brought, it is more environmentally-friendly, cost-effective.
Specific implementation mode
For a further understanding of the present invention, the present invention is illustrated with reference to specific implementation case
Embodiment 1
With sanitary wastewater such as COD cr≤300 mg/L, BOD5≤ 20 mg/L, SS≤150mg/L, PH 6-9
This sanitary wastewater is handled as follows：
A. sanitary wastewater is introduced into grille well, by mechanical fine fack（Gap 2um）Filtering, in filtered wastewater particulate matter or Substance is floated, grid slag concentrates periodically outward transport；
B. the waste water in step 1 is introduced into be loaded into foam separating tower and carries out bubbling processing, gas and waste water ratio are 6:1, Air-blowing detaches foam after ten minutes, is repeated 3 times, and removes a layer sanitary wastewater；
C. by the lower water column in step 2 by adsorption tank, under high velocity agitation, 0.5% absorption of the weight of water being added Agent carries out high-speed stirred, and speed of agitator is controlled at 800 revs/min, after being kept for 2 hours, filters out filter residue, processed water body Process is further processed；
It is 15 that adsorbent, which selects stalk and clay weight ratio,:1, after mixing mixing, it is added in retort, carbonization temperature is 600 DEG C, After charing 4 hours, removal, grinding grain size is< 20um；
D. the water body in step 3 is introduced into sterilization pool and carries out utilizing the ultraviolet processing of 254nm 3 hours；
E. appropriate ferment processing is carried out to the water body in step 4, after pending 2 hours, water body is further passed through into the filtering of 2um Membrane filtration prepares recyclable purified water.
Its index of the purified water prepared is：
COD cr ≤ 60mg/L, BOD5≤ 50mg/L, SS≤40mg/L, PH 6-9
Embodiment 2
With sanitary wastewater such as COD cr≤300 mg/L, BOD5≤ 20 mg/L, SS≤150mg/L, PH 6-9
This sanitary wastewater is handled as follows：
A. sanitary wastewater is introduced into grille well, by mechanical fine fack（Gap 3um）Filtering, in filtered wastewater particulate matter or Substance is floated, grid slag concentrates periodically outward transport；
B. the waste water in step 1 is introduced into be loaded into foam separating tower and carries out bubbling processing, gas and waste water ratio are 7:1, Air-blowing detaches foam after 30 minutes, is repeated 4 times, and removes a layer sanitary wastewater；
C. by the lower water column in step 2 by adsorption tank, under high velocity agitation, 0.7% absorption of the weight of water being added Agent carries out high-speed stirred, and speed of agitator is controlled at 1000 revs/min, after being kept for 2 hours, filters out filter residue, processed water body Process is further processed；
It is 20 that adsorbent, which selects stalk and clay weight ratio,:1, after mixing mixing, it is added in retort, carbonization temperature is 600 DEG C, After charing 4 hours, removal, grinding grain size is< 20um；
D. the water body in step 3 is introduced into sterilization pool and carries out utilizing the ultraviolet processing of 254nm and 365nm 4 hours；
E. appropriate ferment processing is carried out to the water body in step 4, after pending 2 hours, water body is further passed through into the filtering of 2um Membrane filtration prepares recyclable purified water.
Its index of the purified water prepared is：
COD cr ≤ 45mg/L, BOD5≤ 60mg/L, SS≤35mg/L, PH 6-9
Embodiment 3
With sanitary wastewater such as COD cr≤300 mg/L, BOD5≤ 20 mg/L, SS≤150mg/L, PH 6-9
This sanitary wastewater is handled as follows：
A. sanitary wastewater is introduced into grille well, by mechanical fine fack（Gap 3um）Filtering, in filtered wastewater particulate matter or Substance is floated, grid slag concentrates periodically outward transport；
B. the waste water in step 1 is introduced into be loaded into foam separating tower and carries out bubbling processing, gas and waste water ratio are 8:1, Air-blowing detaches foam after 30 minutes, is repeated 8 times, and removes a layer sanitary wastewater；
C. by the lower water column in step 2 by adsorption tank, under high velocity agitation, 0.7% absorption of the weight of water being added Agent carries out high-speed stirred, and speed of agitator is controlled at 1000 revs/min, after being kept for 2 hours, filters out filter residue, processed water body Process is further processed；
It is 30 that adsorbent, which selects stalk and clay weight ratio,:1, after mixing mixing, it is added in retort, carbonization temperature is 600 DEG C, After charing 4 hours, removal, grinding grain size is< 20um；
D. the water body in step 3 is introduced into sterilization pool and carries out utilizing the ultraviolet processing of 254nm and 365nm 4 hours；
E. appropriate ferment processing is carried out to the water body in step 4, after pending 2 hours, water body is further passed through into the filtering of 2um Membrane filtration prepares recyclable purified water.
Its index of the purified water prepared is：
COD cr ≤ 30mg/L, BOD5≤ 65mg/L, SS≤25mg/L, PH 6-9
By embodiment it can be found that the adsorbent of sanitary wastewater provided by the present invention and processing method can efficiently remove life Some other impurity such as surfactant, greasy dirt, protein in waste water living, processing method simplicity, used adsorbent source Extensively, of low cost, specific surface area is larger, adsorption efficiency is higher, thus have great application prospect.

Claims (8)

1. a kind of cost-efficiently domestic sewage processing method, specific embodiment are：
A. sanitary wastewater is introduced into grille well, is filtered by mechanical fine fack, particulate matter or floating class object in filtered wastewater Matter, grid slag concentrate periodically outward transport；
B. the waste water in step 1 is introduced into be loaded into foam separating tower and carries out bubbling processing, and detach foam, remove layer life Waste water；
C. by the lower water column in step 2 by adsorption tank, under high velocity agitation, adsorbent being added, carrying out high-speed stirred, stir Mix rotating speed is controlled at 500-1000 revs/min, after being kept for 1-2 hours, filters out filter residue, processed water body carries out at next step Reason process；
D. the water body in step 3 is introduced into sterilization pool the processing that carries out disinfection；
E. ferment processing is carried out to the water body in step 4, after 1-2 hours pending, used membrane filtration water body is prepared recyclable Purified water.
2. being 2-5 um according to the gap of the grille well described in claim 1.
3. according to described in claim 1 gas and waste water ratio be 6:1-8:1, one is carried out to foam every 10-30 minutes Secondary collection repeats 3-8 times every time.
4. being prepared by the carbide of farming stalk and clay mixture according to the adsorbent described in claim 1, wherein farming The weight ratio of stalk and clay is controlled 10:1-30:Between 1, the adsorbate after charing and pending water body weight ratio Control is 1:100-1:Between 250.
5. being according to the charing substances preparation method described in claim 4：After mixing by stalk and clay, it is added to charcoal Change in stove, carbonization temperature controls between 560-680 DEG C, after carbonizing 3-5 hours, takes out, is ground between grain size 10-50um.
6. being that the ultraviolet lamp selected from 254 and 365nm carries out disinfection according to sterilization method described in claim 1.
7. being replaced every 10 hours primary in 2-5um according to the filter membrane diameter described in claim 1.
8. providing a kind of processing method of sanitary wastewater according to claim 1-7, the method has the characteristics that inexpensive, efficient.
CN201810177106.7A 2018-03-04 2018-03-04 A kind of cost-efficiently sanitary wastewater processing method Pending CN108314264A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110950702A (en) * 2019-12-21 2020-04-03 赵兰坤 Comprehensive treatment process of threonine fermentation waste

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US20140291246A1 (en) * 2013-03-16 2014-10-02 Chemica Technologies, Inc. Selective Adsorbent Fabric for Water Purification
CN104071787A (en) * 2014-06-20 2014-10-01 西北师范大学 Preparation method of biomass-based active carbon
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Publication number Priority date Publication date Assignee Title
CN110950702A (en) * 2019-12-21 2020-04-03 赵兰坤 Comprehensive treatment process of threonine fermentation waste

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Application publication date: 20180724