CN208872578U - A kind of high-chlorine and high-calcium COD in Wastewater system - Google Patents
A kind of high-chlorine and high-calcium COD in Wastewater system Download PDFInfo
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- CN208872578U CN208872578U CN201820880851.3U CN201820880851U CN208872578U CN 208872578 U CN208872578 U CN 208872578U CN 201820880851 U CN201820880851 U CN 201820880851U CN 208872578 U CN208872578 U CN 208872578U
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Abstract
The utility model provides a kind of high-chlorine and high-calcium COD in Wastewater system, including pretreatment unit and the COD detection device being connected with pretreatment unit；Pretreatment unit is used to drop to the chloride ion content in high-chlorine and high-calcium waste water within first threshold, and the calcium ion content in high-chlorine and high-calcium waste water is dropped within second threshold；COD detection device is used to detect the COD of the high-chlorine and high-calcium waste water after pretreatment unit.The system can be by reducing the chloride ion of high-chlorine and high-calcium waste water and the content of calcium ion in advance, its COD is detected again, the too high levels for avoiding chloride ion and calcium ion have an impact the testing result of COD, so that the testing result of COD closer to true value, is conducive to rationally assess the pollution level of waste water.
Description
Technical field
The utility model relates to water quality inspection technique fields, survey more particularly to a kind of high-chlorine and high-calcium chemical oxygen demand of waste water
Determine system.
Background technique
COD (COD, Chemical Oxygen Demand) is chemically to measure to need in water sample by oxygen
The amount of the reducing substances of change.It, can be by the substance of strong oxidizer oxidation in waste water, wastewater treatment plant effluent and contaminated water
Oxygen equivalent.In river pollution and the operational management of industrial wastewater Quality Research and waste water treatment plant, it is one important
And the organic pollution parameter that can comparatively fast measure.
Currently, there are mainly four types of water sample COD detection methods: Permanganate Index Method, rapid-digestion spectrophotometry, weight chromium
Hydrochlorate method and chlorine correction method.Permanganate Index Method is only applicable to the measurement of surface water COD, and can only break up in the middle part of sample
It closes object to be aoxidized, and when chloride ion content is higher than 300mg/L, testing conditions are more harsh；Rapid-digestion spectrophotometric
Method and dichromate titration are only applicable to the water sample that measurement chloride ion content is lower than 1000mg/L, and when calcium ion content is higher,
Also certain influence can be generated on result；Although chlorine correction method can detecte water sample of the chloride ion content within 20000mg/L,
But detection process is very complicated, and still not can be carried out accurate analysis detection to high calcium water sample.
Therefore, in existing COD detection method all cannot well to containing high-concentration chlorine ion and high-concentration Ca from
The waste water of son is accurately tested and analyzed, and need that the COD of a kind of pair of high-chlorine and high-calcium waste water accurately detected is
System.
Utility model content
In view of this, the present invention provides a kind of high-chlorine and high-calcium COD in Wastewater systems, including locate in advance
Reason device and the COD detection device that is connected with pretreatment unit, the system can first reduce the chlorine in high-chlorine and high-calcium waste water from
Sub- content and calcium ion content, then the detection of COD is carried out, the too high levels of chloride ion and calcium ion are avoided to change
It learns oxygen demand testing result to have an impact, so that the testing result of COD is conducive to closer to true value to waste water
Pollution level is rationally assessed.
In a first aspect, the utility model provides a kind of high-chlorine and high-calcium COD in Wastewater system, including locate in advance
Reason device and the COD detection device being connected with the pretreatment unit；
The pretreatment unit is used to drop to the chloride ion content in the high-chlorine and high-calcium waste water within first threshold, with
And the calcium ion content in the high-chlorine and high-calcium waste water is dropped within second threshold；
The COD detection device is used to detect by the pretreated high-chlorine and high-calcium waste water of the pretreatment unit
COD.
In the present invention, the chloride ion content in the high-chlorine and high-calcium waste water is greater than 1000mg/L and/or calcium ion
Content is greater than 500mg/L.
Optionally, the first threshold is any value in 0mg/L-1000mg/L, and the second threshold is 0mg/L-
Any value in 500mg/L.The first threshold and second threshold are selected according to practical measurement.Specifically, can be with
But it is not limited to, the first threshold is 100mg/L, 300mg/L, 600mg/L or 800mg/L, and the second threshold is 100mg/
L, 280mg/L, 330mg/L or 400mg/L.
Optionally, the pretreatment unit include filter out module and with the ionic monitoring mould for filtering out module and being connected
Block, wherein the ionic monitoring module is connected with the COD detection device；
The module that filters out is for reducing the chloride ion content and calcium ion content in the high-chlorine and high-calcium waste water；
The ionic monitoring module be used for detect by it is described filter out resume module after the high-chlorine and high-calcium waste water in
Chloride ion content and calcium ion content；When the ionic monitoring module detect the chloride ion content be down to first threshold with
It is interior, and when the calcium ion content is down within second threshold, the ionic monitoring module controls the high-chlorine and high-calcium waste water stream
Enter the COD detection device；When the ionic monitoring module detect the chloride ion content be higher than first threshold and/or calcium from
When sub- content is higher than second threshold, the ionic monitoring module, which controls the high-chlorine and high-calcium waste water and again flows into, described filters out mould
Block.
Optionally, the module that filters out includes at least one in Sediment Module, ion exchange resin module and adsorption module
Kind.
Optionally, the Sediment Module includes containing the cation and and calcium ion that precipitation reaction can occur with chloride ion
The solution of the anion of precipitation reaction occurs.In the present invention, the Sediment Module can be, but not limited to include containing energy
The Ag precipitated with chloride ion+And/or Hg+Solution, and with calcium ion occur precipitation reaction CO3 2-、PO3 2-And/or
SiO3 2-Solution.Specifically, can be, but not limited to first pass through the high-chlorine and high-calcium waste water containing Ag+And/or Hg+Solution, warp
It enters back into after filtering containing CO3 2-、PO3 2-And/or SiO3 2-Solution, to remove removing chloride and calcium ion.In the utility model
In, the Sediment Module can also be equipped with while precipitate the solution of chloride ion and calcium ion.Specifically, can be, but not limited to as institute
Stating Sediment Module includes sodium aluminate solution.With chloride ion and calcium ion precipitation reaction can occur for sodium metaaluminate, remove simultaneously
Chloride ion and calcium ion.
Optionally, the ion exchange resin module is equipped with for removing the anion exchange resin of removing chloride and for going
Except the cation exchange resin of calcium ion.
Optionally, the adsorption module is equipped with chloride ion adsorbent and calcium ion adsorbent, the chloride ion adsorbent packet
Include at least one of zeolite, active carbon and layered double hydroxide, the calcium ion adsorbent include zeolite, vermiculite,
At least one of Emathlite and active carbon.Specifically, layered double-metal hydroxide can be, but not limited to as magnalium
Hydrotalcite, magnalium carbonate hydrotalcite.
Optionally, the COD detection device includes light source emitter, detection cell, light source receiver and message handler.Into
One step is optional, and for the light source emitter for emitting visible light, the high-chlorine and high-calcium waste water and detection reagent are placed in the inspection
It surveys in pond and is reacted, the light source that the light source emitter generates penetrates the detection cell, and the light source receiver is for receiving
Through the light source of the detection cell, the message handler handles the received light source of the light source receiver, obtains institute
State the COD of high-chlorine and high-calcium waste water.
The utility model has the beneficial effects that
High-chlorine and high-calcium COD in Wastewater system provided by the utility model, including pretreatment unit and COD inspection
Device is surveyed, high-chlorine and high-calcium waste water can be pre-processed, so that the content of calcium ion therein and chloride ion is greatly lowered,
The influence of calcium ion and chloride ion to chemical oxygen demand detection is avoided, so that the COD of detection is closer to true value,
Be conducive to rationally assess contaminated wastewater degree.
Detailed description of the invention
Fig. 1 is a kind of high-chlorine and high-calcium COD in Wastewater system structure signal provided by the embodiment of the utility model
Figure；
Fig. 2 is that another high-chlorine and high-calcium COD in Wastewater system structure provided by the embodiment of the utility model is shown
It is intended to.
Specific embodiment
As described below is the preferred embodiment of the utility model embodiment, it is noted that for the general of the art
For logical technical staff, under the premise of not departing from the utility model embodiment principle, several improvements and modifications can also be made,
These improvements and modifications are also considered as the protection scope of the utility model embodiment.
Referring to Fig. 1, being a kind of high-chlorine and high-calcium COD in Wastewater system provided by the utility model, the height
Chlorine high calcium COD in Wastewater system 10 includes pretreatment unit 11 and the COD being connected with pretreatment unit inspection
Survey device 12；The pretreatment unit 11 be used for by the chloride ion content in the high-chlorine and high-calcium waste water drop to first threshold with
It is interior, and the calcium ion content in the high-chlorine and high-calcium waste water is dropped within second threshold；
The COD detection device 12 passes through the pretreated high-chlorine and high-calcium waste water of the pretreatment unit for detecting
COD.
In the utility model embodiment, chloride ion content in the high-chlorine and high-calcium waste water be greater than 1000mg/L and/
Or calcium ion content is greater than 500mg/L.
In the utility model embodiment, the first threshold is any value in 0mg/L-1000mg/L, described the
Two threshold values are any value in 0mg/L-500mg/L.The first threshold and second threshold are selected according to practical measurement
It selects.Specifically, can be, but not limited to, the first threshold is 100mg/L, 300mg/L, 600mg/L or 800mg/L, described the
Two threshold values are 100mg/L, 280mg/L, 330mg/L or 400mg/L.
In the utility model embodiment, referring to Fig. 2, for another high-chlorine and high-calcium waste water provided by the utility model
COD determination system, wherein the pretreatment unit 11 includes filtering out module 13 and filtering out 13 phase of module with described
Ionic monitoring module 14 even, wherein the ionic monitoring module 14 is connected with the COD detection device 12；It is described to filter out mould
Block 13 is for reducing the chloride ion content and calcium ion content in the high-chlorine and high-calcium waste water；The ionic monitoring module 14 is used for
Detect by it is described filter out resume module after the high-chlorine and high-calcium waste water in chloride ion content and calcium ion content；When described
Ionic monitoring module 14 detects that the chloride ion content is down within first threshold, and the calcium ion content is down to the second threshold
When within value, the ionic monitoring module 14 controls the high-chlorine and high-calcium waste water and flows into the COD detection device 12；The ion
It is described when monitoring module 14 detects that the chloride ion content is higher than first threshold and/or calcium ion content higher than second threshold
Ionic monitoring module 14, which controls the high-chlorine and high-calcium waste water and again flows into, described filters out module 13.That is, ionic monitoring mould
Chloride ion content and calcium ion content of the block detection in the high-chlorine and high-calcium waste water after filtering out resume module, work as chloride ion content
It is down within first threshold and calcium ion content is when being down within second threshold, control high-chlorine and high-calcium waste water flows into COD detection dress
It sets and carries out COD measurement；When detecting that chloride ion content does not drop within first threshold and/or calcium ion content does not drop to the second threshold
When within value, is again flowed into control high-chlorine and high-calcium waste water and filter out module, continue to reduce chloride ion content and calcium ion therein
Content, until ionic monitoring module detect chloride ion content therein be down within first threshold and calcium ion content be down to
When within second threshold, then controls high-chlorine and high-calcium waste water and flow into COD detection device.
In the utility model embodiment, when the chloride ion content of ionic monitoring module detection is higher than first threshold
And/or calcium ion content is controlled and again flows into high-chlorine and high-calcium waste water and filter out module, specifically, flowing into when being higher than second threshold
Filter out at least one in Sediment Module, ion exchange resin module and the adsorption module in module.Specifically according to reality
Situation is selected.
In the utility model embodiment, the module 13 that filters out includes Sediment Module 15, ion exchange resin module
At least one of 16 and adsorption module 17.Fig. 2 provides only a kind of feasible composition for filtering out module 13, includes precipitating mould
Block 15, ion exchange resin module 16 and adsorption module 17, in other embodiments, filter out module 13 according to the actual situation into
Row selection；Meanwhile when the connection for filtering out Sediment Module 15, ion exchange resin module 16 and adsorption module 17 in module 13 is successive
Sequence is not construed as limiting, and is selected according to the actual situation.
In the utility model embodiment, the Sediment Module 15 include containing can with chloride ion occur precipitation reaction
The solution of anion cationic and that precipitation reaction occurs with calcium ion.Sediment Module 15 can be, but not limited to include containing energy
The Ag precipitated with chloride ion+And/or Hg+Solution, and with calcium ion occur precipitation reaction CO3 2-、PO3 2-And/or
SiO3 2-Solution.Specifically, can be, but not limited to first pass through the high-chlorine and high-calcium waste water containing Ag+And/or Hg+Solution, warp
It enters back into after filtering containing CO3 2-、PO3 2-And/or SiO3 2-Solution, to remove removing chloride and calcium ion.Sediment Module 15
It can be equipped with while precipitate the solution of chloride ion and calcium ion.Specifically, can be, but not limited to as the Sediment Module include inclined
Sodium aluminate solution.With chloride ion and calcium ion precipitation reaction can occur for sodium metaaluminate, while remove removing chloride and calcium ion.
In the utility model embodiment, the ion exchange resin module 16 be equipped with for go removing chloride yin from
Sub-exchange resin and cation exchange resin for removing calcium ion.Specifically, the high-chlorine and high-calcium waste water can first pass through
Anion exchange resin, using cation exchange resin；Or the high-chlorine and high-calcium waste water can first pass through cationic exchange
Resin, using anion exchange resin.
In the utility model embodiment, the adsorption module 17 is equipped with chloride ion adsorbent and calcium ion adsorbent,
The chloride ion adsorbent includes at least one of zeolite, active carbon and layered double hydroxide, and the calcium ion is inhaled
Attached dose includes at least one of zeolite, vermiculite, Emathlite and active carbon.Specifically, layered double-metal hydroxide
It can be, but not limited to as magnalium hydrotalcite, magnalium carbonate hydrotalcite.
In the utility model embodiment, the COD detection device 12 includes light source emitter, detection cell, light source reception
Device and message handler.Optionally, the light source emitter is for emitting visible light, the high-chlorine and high-calcium waste water and detection reagent
It is placed in the detection cell and is reacted, the light source that the light source emitter generates penetrates the detection cell, and the light source receives
Device be used for receives transmission the detection cell light source, the message handler to the received light source of the light source receiver at
Reason, obtains the COD of the high-chlorine and high-calcium waste water.Specifically, the detection reagent can be sulfuric acid solution, permanganic acid
Potassium solution and sodium oxalate solution, and COD measurement is carried out referring to GB 11892-89.Specifically, the detection reagent can be nitric acid
Silver-colored solution and potassium bichromate solution, and COD measurement is carried out referring to HJ/T 399-2007.Specifically, the detection reagent can be
Silver salt solution, potassium bichromate solution, ferroin solution and l ferrous ammonium sulfate solution, and COD survey is carried out referring to HJ 828-2017
It is fixed.The detection reagent is selected according to actual needs.
The utility model provides a kind of high-chlorine and high-calcium COD in Wastewater system, can be to high-chlorine and high-calcium waste water
It is pre-processed, reduces the content of chloride ion and calcium ion therein, so that the COD of detection is kept away closer to true value
The influence of calcium ion and chloride ion to chemical oxygen demand detection is exempted from, has been conducive to rationally assess contaminated wastewater degree.
The utility model additionally provides the application method of above-mentioned high-chlorine and high-calcium COD in Wastewater device, packet
It includes: high-chlorine and high-calcium waste water is passed into the pretreatment unit, the chloride ion content in the high-chlorine and high-calcium waste water is made to drop to
Within one threshold value, calcium ion content is dropped within second threshold；It will be high through the pretreated high chlorine of the pretreatment unit
Calcium waste water is passed through the COD detection device, to detect the COD of the high-chlorine and high-calcium waste water.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that for the common of this field
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In the protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (9)
1. a kind of high-chlorine and high-calcium COD in Wastewater system, which is characterized in that including pretreatment unit and with it is described
The connected COD detection device of pretreatment unit；
The pretreatment unit is used to drop to the chloride ion content in the high-chlorine and high-calcium waste water within first threshold, and will
Calcium ion content in the high-chlorine and high-calcium waste water drops within second threshold；
The COD detection device is used to detect the chemistry by the pretreated high-chlorine and high-calcium waste water of the pretreatment unit
Oxygen demand.
2. high-chlorine and high-calcium COD in Wastewater system as described in claim 1, which is characterized in that the first threshold
For any value in 0mg/L-1000mg/L, the second threshold is any value in 0mg/L-500mg/L.
3. high-chlorine and high-calcium COD in Wastewater system as described in claim 1, which is characterized in that the pretreatment dress
Set including filter out module and with the ionic monitoring module for filtering out module and being connected, wherein the ionic monitoring module and institute
COD detection device is stated to be connected；
The module that filters out is for reducing the chloride ion content and calcium ion content in the high-chlorine and high-calcium waste water；
The ionic monitoring module be used for detect by it is described filter out resume module after the high-chlorine and high-calcium waste water in chlorine from
Sub- content and calcium ion content；When the ionic monitoring module detects that the chloride ion content is down within first threshold, and
When the calcium ion content is down within second threshold, the ionic monitoring module is controlled described in the high-chlorine and high-calcium waste water inflow
COD detection device；When the ionic monitoring module detects that the chloride ion content is higher than first threshold and/or calcium ion content
When higher than second threshold, the ionic monitoring module, which controls the high-chlorine and high-calcium waste water and again flows into, described filters out module.
4. high-chlorine and high-calcium COD in Wastewater system as claimed in claim 3, which is characterized in that described to filter out module
Including at least one of Sediment Module, ion exchange resin module and adsorption module.
5. high-chlorine and high-calcium COD in Wastewater system as claimed in claim 4, which is characterized in that the Sediment Module
Including the solution containing the cation that precipitation reaction can occur with chloride ion and with the anion of calcium ion generation precipitation reaction.
6. high-chlorine and high-calcium COD in Wastewater system as claimed in claim 4, which is characterized in that the ion exchange
Resin module is equipped with the cation exchange resin for removing the anion exchange resin of removing chloride and for removing calcium ion.
7. high-chlorine and high-calcium COD in Wastewater system as claimed in claim 4, which is characterized in that the adsorption module
Equipped with chloride ion adsorbent and calcium ion adsorbent, the chloride ion adsorbent includes zeolite, active carbon and layered bi-metal hydrogen
At least one of oxide, the calcium ion adsorbent include at least one in zeolite, vermiculite, Emathlite and active carbon
Kind.
8. high-chlorine and high-calcium COD in Wastewater system as described in claim 1, which is characterized in that the COD detection
Device includes light source emitter, detection cell, light source receiver and message handler.
9. high-chlorine and high-calcium COD in Wastewater system as claimed in claim 8, which is characterized in that the light source transmitting
Device is for emitting visible light and penetrating the detection cell, and the detection cell is for holding the high-chlorine and high-calcium waste water and detection examination
Agent, the light source receiver are used to receive the light source through the detection cell, and the message handler is to the light source receiver
Received light source is handled, and the COD of the high-chlorine and high-calcium waste water is obtained.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108593403A (en) * | 2018-06-07 | 2018-09-28 | 江西怡杉科技有限公司 | A kind of high-chlorine and high-calcium COD in Wastewater system and its application method |
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2018
- 2018-06-07 CN CN201820880851.3U patent/CN208872578U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108593403A (en) * | 2018-06-07 | 2018-09-28 | 江西怡杉科技有限公司 | A kind of high-chlorine and high-calcium COD in Wastewater system and its application method |
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