Heavy metal capturing agent biochemical inhibition recovery agent, preparation method and application thereof

Abstract

The application provides a heavy metal capturing agent biochemical inhibition recovery medicament, a preparation method and application thereof, and relates to the field of sewage treatment. The heavy metal capturing agent biochemical inhibition recovery medicament comprises the following components in parts by weight: anionic polyacrylamide 1-5 parts, hydroxyapatite 2-13 parts, zinc salt 5-10 parts, aluminum salt 15-30 parts, nickel salt 1-5 parts, copper salt 1-10 parts, calcium hypochlorite 0.5-3 parts and biocompatible solute 20-50 parts. The medicament formula provided by the application can effectively eliminate the problem that the sludge activity of a biochemical system is inhibited due to the conventional heavy metal capturing agent contained in the influent of a sewage plant, and has the characteristics of high efficiency, convenient operation and quick recovery of the nitrification capacity of the biochemical system. The heavy metal capturing agent biochemical inhibition recovery medicament provided by the application can be directly added at different points of contact between the sewage plant and the activated sludge, and the operation is flexible and convenient, and the original process operation parameters do not need to be adjusted.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of sewage treatment, in particular to a heavy metal capturing agent biochemical inhibition recovery agent and a preparation method and application thereof. BACKGROUND

[0002] With the rapid development of electroplating, chemical industry, metal pickling, metallurgy and electronics industries, a large amount of wastewater containing heavy metals is generated during production. The wastewater containing heavy metals needs to be pretreated to make the content of heavy metal ions meet the standard, and then the wastewater enters the biochemical system to treat other pollutants.

[0003] Among the many methods for heavy metal pretreatment, the chemical precipitation method by adding heavy metal capturing agent has the advantages of low investment cost, high removal efficiency, simple operation and stable and reliable operation, and is widely used. However, in engineering application, operators often need to add excessive heavy metal capturing agent to ensure that the effluent heavy metal meets the standard. The organic sulfur component contained in the commonly used DTC and TMT heavy metal capturing agents can efficiently capture and precipitate heavy metal ions in wastewater, but this kind of organic sulfur component has good biocompatibility and can easily penetrate into the intracellular of microorganisms, chelate with metal ions at the active site of the key functional enzyme center, interfere with the enzyme catalytic reaction process, and cause the biochemical treatment effect to deteriorate. For example, when the residual heavy metal capturing agent is discharged into the sewage plant, the biochemical system shows that the dissolved oxygen in the aerobic tank gradually increases, the nitrification effect of ammonia nitrogen deteriorates rapidly, and the total nitrogen in the effluent faces the problem of exceeding the standard.

[0004] For industrial park sewage plants or urban sewage plants, the upstream enterprise is usually required to treat the wastewater containing heavy metals to meet the standard before discharging into the sewage plant. However, in order to ensure that the heavy metal meets the standard, the upstream enterprise often adds excessive heavy metal capturing agent, but the sewage plant is difficult to find and take feasible control measures in time, which causes the biochemical system to deteriorate and affects the normal operation of the sewage plant. When the phenomenon of biochemical system deterioration caused by excessive heavy metal capturing agent is found, the sewage plant can only temporarily stop the water inflow, and gradually recover the biochemical treatment ability through the metabolic activity of microorganisms, which seriously affects the efficiency of the sewage plant. At present, there is a lack of effective countermeasures to deal with this problem to minimize the loss of the sewage plant.

[0005] Therefore, there is an urgent need in the art to develop a simple and efficient method for quickly recovering the biochemical inhibition of heavy metal capturing agent, so as to ensure the stable operation of the sewage plant. SUMMARY

[0006] Therefore, the technical problem to be solved by the present application is to overcome the defects in the prior art that the biochemical system deteriorates due to the discharge of excessive heavy metal capturing agent, which affects the normal operation of the sewage plant, so as to provide a heavy metal capturing agent biochemical inhibition recovery agent and a preparation method and application thereof.

[0007] In one aspect of the present application, the present application provides a heavy metal capturing agent biochemical inhibition recovery agent, which comprises the following raw material components in parts by weight: anionic polyacrylamide 1-5 parts, hydroxyapatite 2-13 parts, zinc salt 5-10 parts, aluminum salt 15-30 parts, nickel salt 1-5 parts, copper salt 1-10 parts, calcium hypochlorite 0.5-3 parts, and biocompatible solute 20-50 parts.

[0008] Further, the heavy metal capturing agent biochemical inhibition recovery agent comprises the following raw material components in parts by weight: anionic polyacrylamide 2-4 parts, hydroxyapatite 3-13 parts, zinc salt 6-8 parts, aluminum salt 16-28 parts, nickel salt 2-4 parts, copper salt 2-8 parts, calcium hypochlorite 1-2 parts, and biocompatible solute 25-48 parts.

[0009] Further, the biocompatible solute comprises at least one of trehalose, betaine, tetrahydropyrimidine, mannitol, glycine, and sorbitol.

[0010] Further, the zinc salt comprises at least one of zinc sulfate, zinc chloride, and zinc nitrate; the aluminum salt comprises at least one of aluminum chloride, aluminum sulfate, and aluminum nitrate; the nickel salt comprises at least one of nickel sulfate, nickel chloride, and nickel nitrate; and the copper salt comprises at least one of copper sulfate, copper chloride, and copper nitrate.

[0011] Further, the heavy metal capturing agent biochemical inhibition recovery agent comprises the following raw material components in parts by weight: anionic polyacrylamide 3 parts, hydroxyapatite 12 parts, zinc sulfate 7 parts, aluminum chloride 27 parts, nickel sulfate 3 parts, copper sulfate 6 parts, calcium hypochlorite 2 parts, and betaine 40 parts.

[0012] Further, the heavy metal capturing agent biochemical inhibition recovery agent comprises the following raw material components in parts by weight:

[0013] anionic polyacrylamide 1 part, hydroxyapatite 2 parts, zinc sulfate 5 parts, aluminum chloride 15 parts, nickel sulfate 1 part, copper sulfate 1 part, calcium hypochlorite 0.5 part, and trehalose 20 parts; or

[0014] anionic polyacrylamide 2 parts, hydroxyapatite 4 parts, zinc sulfate 6 parts, aluminum chloride 20 parts, nickel sulfate 2 parts, copper sulfate 3 parts, calcium hypochlorite 1 part, and betaine 30 parts; or

[0015] anionic polyacrylamide 3 parts, hydroxyapatite 6 parts, zinc sulfate 7 parts, aluminum chloride 25 parts, nickel sulfate 3 parts, copper sulfate 4 parts, calcium hypochlorite 1.5 parts, and mannitol 40 parts; or

[0016] Anionic polyacrylamide 4 parts, hydroxyapatite 8 parts, zinc sulfate 8 parts, aluminum chloride 13 parts, nickel sulfate 4 parts, copper sulfate 8 parts, calcium hypochlorite 2 parts and glycine 50 parts; or

[0017] Anionic polyacrylamide 5 parts, hydroxyapatite 10 parts, zinc sulfate 10 parts, aluminum chloride 30 parts, nickel sulfate 5 parts, copper sulfate 10 parts, calcium hypochlorite 3 parts and sorbitol 28 parts.

[0018] In a second aspect, the present application provides a preparation method of the heavy metal capturing agent biochemical inhibition recovery agent, comprising: uniformly mixing each raw material component of the heavy metal capturing agent biochemical inhibition recovery agent to obtain.

[0019] In a third aspect, the present application provides an application of the heavy metal capturing agent biochemical inhibition recovery agent in promoting recovery of heavy metal capturing agent biochemical inhibition.

[0020] Further, the method for promoting recovery of heavy metal capturing agent biochemical inhibition comprises: adding the heavy metal capturing agent biochemical inhibition recovery agent to activated sludge caused by heavy metal capturing agent to cause biochemical inhibition.

[0021] Further, the heavy metal capturing agent comprises DTC and / or TMT heavy metal capturing agent.

[0022] The technical scheme of the present application has the following advantages:

[0023] 1. The present application provides a heavy metal capturing agent biochemical inhibition recovery agent for promoting recovery of heavy metal capturing agent biochemical inhibition, which comprises: anionic polyacrylamide, hydroxyapatite, zinc salt, aluminum salt, nickel salt, copper salt, calcium hypochlorite and biocompatible solute. During the mixing and dissolution of the heavy metal capturing agent biochemical inhibition recovery agent, microsoluble hydroxyapatite and dissolved hydroxyapatite are formed. On the one hand, extracellular microbial reactions occur: microsoluble hydroxyapatite forms surface-charged active carrier microparticles containing metal ions (zinc, aluminum, nickel, copper and calcium), which adsorb activated sludge under the condensation of polyacrylamide, so that residual organic sulfur in wastewater is fixed through physical and chemical reactions such as chelation and adsorption on the surface of the active carrier microparticles; on the other hand, intracellular reactions occur: dissolved hydroxyapatite acts as a carrier to transport biocompatible solute and metal ions into microbial cells, biocompatible substances supplement the substances required for the recovery of stressed microorganisms, and metal ions provide ions required for microbial metabolism, thereby achieving rapid recovery of metabolic activity by strengthening microbial stress tolerance. Therefore, the agent formula provided by the present application can effectively eliminate the problem of inhibition of sludge activity in the biochemical system of a wastewater treatment plant due to the presence of conventional heavy metal capturing agents in the influent, and has the characteristics of high efficiency, convenient operation and rapid recovery of nitrification capacity of the biochemical system.

[0024] 2. The heavy metal capturing agent biochemical inhibition recovery agent provided by the present application can be directly added at different points of contact with activated sludge in a sewage plant, and is flexible and convenient to operate without the need to adjust the original process operation parameters.

[0025] 3. The heavy metal capturing agent biochemical inhibition recovery agent provided by the present application can be added when biochemical inhibition occurs, and can be stopped after the biochemical system recovers, so that the problem of excessive metal ions will not occur, and the activated sludge is not toxic and harmless, and will not cause other negative effects.

[0026] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter in the description. DETAILED DESCRIPTION

[0027] The embodiments of the present application are described in detail below, which are intended to explain the present application and cannot be understood as a limitation of the present application.

[0028] The present application is described below with reference to specific examples, and it should be noted that these examples are merely descriptive and do not limit the present application in any way.

[0029] The detection methods of various indexes in the following experimental examples are as follows:

[0030] Ammonia nitrogen concentration: GB / T 7479-87 Water Quality-Determination of Ammonium-Nessler's Reagent Colorimetric Method;

[0031] Metal ion concentration (aluminum, zinc, nickel, copper): GB / T 5750.6-2006 Inductively Coupled Plasma Emission Spectrometry;

[0032] Luminous bacteria inhibition rate: GB / T 15441-1995 Water Quality-Determination of Acute Toxicity-Luminous Bacteria Method.

[0033] If the specific experimental steps or conditions are not specified in the examples, the operation or conditions can be carried out according to the conventional experimental steps described in the literature in the art. The raw materials or instruments used are conventional products that can be obtained by purchase, including but not limited to the raw materials or instruments used in the examples of the present application.

[0034] Example 1

[0035] The present embodiment provides a heavy metal capturing agent biochemical inhibition recovery agent, which is obtained by mixing the following raw materials in parts by weight: 3 parts of anionic polyacrylamide, 12 parts of hydroxyapatite, 7 parts of zinc sulfate, 27 parts of aluminum chloride, 3 parts of nickel sulfate, 6 parts of copper sulfate, 2 parts of calcium hypochlorite, and 40 parts of betaine.

[0036] Example 2

[0037] The present embodiment provides a heavy metal capturing agent biochemical inhibition recovery agent, which is obtained by mixing raw materials in the following proportions by weight: anionic polyacrylamide 1 part, hydroxyapatite 2 parts, zinc sulfate 5 parts, aluminum chloride 15 parts, nickel sulfate 1 part, copper sulfate 1 part, calcium hypochlorite 0.5 part, and trehalose 20 parts.

[0038] Example 3

[0039] The present embodiment provides a heavy metal capturing agent biochemical inhibition recovery agent, which is obtained by mixing raw materials in the following proportions by weight: anionic polyacrylamide 2 parts, hydroxyapatite 4 parts, zinc sulfate 6 parts, aluminum chloride 20 parts, nickel sulfate 2 parts, copper sulfate 3 parts, calcium hypochlorite 1 part, and betaine 30 parts.

[0040] Example 4

[0041] The present embodiment provides a heavy metal capturing agent biochemical inhibition recovery agent, which is obtained by mixing raw materials in the following proportions by weight: anionic polyacrylamide 3 parts, hydroxyapatite 6 parts, zinc sulfate 7 parts, aluminum chloride 25 parts, nickel sulfate 3 parts, copper sulfate 4 parts, calcium hypochlorite 1.5 parts, and mannitol 40 parts.

[0042] Example 5

[0043] The present embodiment provides a heavy metal capturing agent biochemical inhibition recovery agent, which is obtained by mixing raw materials in the following proportions by weight: anionic polyacrylamide 4 parts, hydroxyapatite 8 parts, zinc sulfate 8 parts, aluminum chloride 13 parts, nickel sulfate 4 parts, copper sulfate 8 parts, calcium hypochlorite 2 parts, and glycine 50 parts.

[0044] Example 6

[0045] The present embodiment provides a heavy metal capturing agent biochemical inhibition recovery agent, which is obtained by mixing raw materials in the following proportions by weight: anionic polyacrylamide 5 parts, hydroxyapatite 10 parts, zinc sulfate 10 parts, aluminum chloride 30 parts, nickel sulfate 5 parts, copper sulfate 10 parts, calcium hypochlorite 3 parts, and sorbitol 28 parts.

[0046] Comparative Example 1

[0047] The present comparative example provides a heavy metal capturing agent biochemical inhibition recovery agent, which is obtained by mixing raw materials in the following proportions by weight: anionic polyacrylamide 1 part, hydroxyapatite 1 part, zinc sulfate 2 parts, aluminum chloride 5 parts, nickel sulfate 1 part, copper sulfate 1 part, calcium hypochlorite 0.5 part, and betaine 88.5 parts.

[0048] Comparative Example 2

[0049] The comparative example provides a heavy metal capturing agent biochemical inhibition recovery agent, which is obtained by mixing raw materials in the following proportions: 1 part of anionic polyacrylamide, 14 parts of hydroxyapatite, 15 parts of zinc sulfate, 10 parts of aluminum chloride, 20 parts of nickel sulfate, 20 parts of copper sulfate, 10 parts of calcium hypochlorite, and 10 parts of betaine.

[0050] Experimental example 1: Effect of the agent of example 1 on biochemical inhibition recovery of heavy metal capturing agents

[0051] Experimental process:

[0052] Take the influent of a normally operating biochemical pool of a sewage plant, and prepare water samples containing 2 mg / L of DTC and TMT heavy metal capturing agents, respectively. Meanwhile, take a water sample containing no heavy metal capturing agent as a control. Add fresh activated sludge with normal activity to each water sample for aeration. The sludge concentration during the reaction process is 5000 mg / L, the water temperature is 25°C, the influent ammonia nitrogen is 29 mg / L, and the aeration time is 2 h. After aeration, take water samples to detect the ammonia nitrogen concentration. After 2 h of aeration, add 5 mg / L of the agent provided in example 1 to the water samples containing DTC and TMT heavy metal capturing agents, and continue aeration. Meanwhile, take a control sample without adding the agent. Take water samples at 2 h and 4 h of aeration to detect the ammonia nitrogen concentration. The detection results are shown in Table 1.

[0053] Table 1: Biochemical inhibition recovery results of the simulated water sample by the agent of example 1

[0054]

[0055] As shown in Table 1, the ammonia nitrogen can be reduced to 0.5 mg / L by adding activated sludge to the normal water sample. For the water sample containing heavy metal capturing agents, the ammonia nitrogen concentration increases sharply after aeration with activated sludge, which proves that excessive heavy metal capturing agents can cause biochemical inhibition of activated sludge. After adding the agent provided in example 1 for aeration, the ammonia nitrogen concentration decreases significantly, while the ammonia nitrogen concentration in the control sample without adding the agent hardly decreases or decreases slightly, which proves that the nitrification of activated sludge inhibited by heavy metal capturing agents is recovered well by treating the activated sludge with the agent provided in example 1.

[0056] Experimental example 2: Effect of the agents of examples 2-6 on biochemical inhibition recovery of heavy metal capturing agents

[0057] Experimental process:

[0058] Take the influent of the biochemical pool of the running sewage plant, prepare 5 portions of water sample of DTC heavy metal capturing agent with the concentration of 2 mg / L, put the fresh activated sludge with normal activity into each water sample for aeration, the sludge concentration is 5000 mg / L during the reaction process, the water temperature is 25°C, the influent ammonia nitrogen is 29 mg / L, after 2 hours of aeration, add 5 mg / L of the agent provided by the examples 2-6 for continuous aeration, after 4 hours of aeration, take the supernatant for detection of the ammonia nitrogen concentration. The detection results are shown in Table 2.

[0059] Table 2 The biochemical inhibition recovery results of the agents of the examples 2-6 on the simulated water sample

[0060]

[0061] As shown in Table 2, the nitrification recovery effect of the sludge is good after the sludge inhibited by the heavy metal capturing agent is treated by each agent provided by the examples 2-6 of the present application.

[0062] The effect of a single component in the agent on the biochemical inhibition recovery of the heavy metal capturing agent

[0063] Experimental process:

[0064] Take the influent of the biochemical pool of the running sewage plant, prepare 9 portions of water sample of DTC heavy metal capturing agent with the concentration of 2 mg / L, put the fresh activated sludge with normal activity into each water sample for aeration, the sludge concentration is 5000 mg / L during the reaction process, the water temperature is 25°C, the influent ammonia nitrogen is 29 mg / L, after 2 hours of aeration, add 5 mg / L of the agent of the example 1 and the single component thereof for continuous aeration, after 4 hours of aeration, take the supernatant for detection of the ammonia nitrogen concentration. The detection results are shown in Table 3.

[0065] Table 3 The biochemical inhibition recovery results of the single component of the agent on the simulated water sample

[0066] additive ingredients ammonia nitrogen concentration (mg / L) pharmaceutical agent of example 1 0.5 anionic polyacrylamide 6 hydroxyapatite 5.2 zinc sulfate 5.8 aluminum chloride 5.6 nickel sulfate 6 copper sulfate 5.8 calcium hypochlorite 5.8 betaine 5.2

[0067] As shown in Table 3, the agent of the example 1 of the present application plays an obvious positive role in the recovery of the nitrification effect of the activated sludge, and any single component does not obviously recover the ammonia nitrogen removal effect of the activated sludge.

[0068] The effect of the agent of the example 1 and the agents of the comparative examples 1-2 on the biochemical inhibition recovery of the heavy metal capturing agent and the test of the risk of exceeding the metal ion

[0069] Experimental process:

[0070] Take the influent of the biochemical pool of the running sewage plant, prepare 3 portions of water sample with 2 mg / L of DTC heavy metal capturing agent, and add fresh activated sludge with normal activity to each water sample for aeration. The sludge concentration during the reaction process is 5000 mg / L, the water temperature is 25°C, the influent ammonia nitrogen is 29 mg / L, after 2 hours of aeration, 5 mg / L of the agent provided in Example 1 and Comparative Examples 1-2 is added for continuous aeration, and after 4 hours of aeration, the supernatant is taken for detection of the ammonia nitrogen concentration and the metal ion concentration. The detection results are shown in Table 4.

[0071] Table 4 Biochemical inhibition recovery results of the agent on the simulated water sample and metal ion concentration

[0072]

[0073] As shown in Table 4, the agent provided in Example 1 has a good effect on the recovery of the nitrification of the activated sludge inhibited by the heavy metal capturing agent, and there is no risk of exceeding the metal ion concentration. The content of the biocompatible solute in the agent of Comparative Example 1 is too high, although it has a certain effect on the recovery of the nitrification of the sludge, it is far inferior to the agent provided in Example 1; the content of the metal ion in the agent of Comparative Example 2 is too high, and the content of the biocompatible solute is too low, the recovery effect of the sludge digestion is very small, and it is easy to cause the risk of exceeding the metal ion concentration.

[0074] Experimental Example 5 Influence of the agent of Example 1 on the biological toxicity of the residual wastewater containing heavy metal capturing agent

[0075] Acute photobacterium toxicity is a method for evaluating the toxicity of wastewater, which has the advantages of high sensitivity and fast testing. For the wastewater to be treated, the change in the comprehensive toxicity before and after the treatment of the wastewater can be characterized by testing the photobacterium inhibition rate before and after the treatment of the wastewater.

[0076] Experimental process:

[0077] Take the influent of the biochemical pool of the running sewage plant, prepare 3 portions of water sample with 2 mg / L of DTC heavy metal capturing agent, and add fresh activated sludge with normal activity to each water sample for aeration. The sludge concentration during the reaction process is 5000 mg / L, the water temperature is 25°C, the influent ammonia nitrogen is 29 mg / L, after 2 hours of aeration, 5 mg / L of the agent provided in Example 1 and Comparative Examples 1-2 is added for continuous aeration, and after 4 hours of aeration, the supernatant is taken for detection of the ammonia nitrogen concentration and the metal ion concentration. The detection results are shown in Table 4.

[0078] Table 5 Influence of the agent of Example 1 on the acute photobacterium toxicity of the simulated water sample

[0079]

[0080] As shown in Table 5, the water sample with the residue of the conventional heavy metal capturing agent has certain biological toxicity, and the water sample with the residue of the conventional heavy metal capturing agent treated by the agent provided by the embodiment 1 of the present application can significantly reduce the biological toxicity of the water sample, and has certain environmental benefits.

[0081] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0082] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A heavy metal capture agent biochemical inhibition recovery agent, characterized in that: The invention comprises the following raw material components in parts by weight: 1-5 parts of anionic polyacrylamide, 2-13 parts of hydroxyapatite, 5-10 parts of zinc salt, 15-30 parts of aluminum salt, 1-5 parts of nickel salt, 1-10 parts of copper salt, 0.5-3 parts of calcium hypochlorite and 20-50 parts of biocompatible solute, wherein the biocompatible solute comprises at least one of trehalose, betaine, ectoine, mannitol, glycine and sorbitol.

2. The heavy metal scavenger biochemical inhibition recovery agent according to claim 1, characterized in that The invention comprises the following raw material components in parts by weight: 2-4 parts of anionic polyacrylamide, 3-13 parts of hydroxyapatite, 6-8 parts of zinc salt, 16-28 parts of aluminum salt, 2-4 parts of nickel salt, 2-8 parts of copper salt, 1-2 parts of calcium hypochlorite and 25-48 parts of biocompatible solute.

3. The heavy metal scavenger biochemical inhibition recovery agent according to claim 1 or 2, characterized in that The zinc salt includes at least one of zinc sulfate, zinc chloride, and zinc nitrate; the aluminum salt includes at least one of aluminum chloride, aluminum sulfate, and aluminum nitrate; the nickel salt includes at least one of nickel sulfate, nickel chloride, and nickel nitrate; and the copper salt includes at least one of copper sulfate, copper chloride, and copper nitrate.

4. The heavy metal scavenger biochemical inhibition recovery agent according to claim 1, characterized in that The raw material components include, by weight: 3 parts of anionic polyacrylamide, 12 parts of hydroxyapatite, 7 parts of zinc sulfate, 27 parts of aluminum chloride, 3 parts of nickel sulfate, 6 parts of copper sulfate, 2 parts of calcium hypochlorite and 40 parts of betaine.

5. The heavy metal scavenger biochemical inhibition recovery agent according to claim 1, characterized in that Calculated by weight, it includes the following raw material components: 1 part of anionic polyacrylamide, 2 parts of hydroxyapatite, 5 parts of zinc sulfate, 15 parts of aluminum chloride, 1 part of nickel sulfate, 1 part of copper sulfate, 0.5 parts of calcium hypochlorite and 20 parts of trehalose; or 2 parts of anionic polyacrylamide, 4 parts of hydroxyapatite, 6 parts of zinc sulfate, 20 parts of aluminum chloride, 2 parts of nickel sulfate, 3 parts of copper sulfate, 1 part of calcium hypochlorite and 30 parts of betaine; or 3 parts of anionic polyacrylamide, 6 parts of hydroxyapatite, 7 parts of zinc sulfate, 25 parts of aluminum chloride, 3 parts of nickel sulfate, 4 parts of copper sulfate, 1.5 parts of calcium hypochlorite and 40 parts of mannitol; or 5 parts of anionic polyacrylamide, 10 parts of hydroxyapatite, 10 parts of zinc sulfate, 30 parts of aluminum chloride, 5 parts of nickel sulfate, 10 parts of copper sulfate, 3 parts of calcium hypochlorite and 28 parts of sorbitol.

6. The method for preparing the heavy metal scavenger biochemical inhibition recovery agent according to any one of claims 1 to 5, characterized in that: include: The heavy metal capture agent biochemical inhibition recovery agent is obtained by uniformly mixing the raw material components.

7. Use of the heavy metal scavenger biochemical inhibition recovery agent according to any one of claims 1 to 5 in promoting the recovery of heavy metal scavenger biochemical inhibition.

8. The use according to claim 7, characterized in that The method for promoting the recovery of heavy metal capture agent biochemical inhibition comprises: adding the heavy metal capture agent biochemical inhibition recovery agent to the activated sludge biochemically inhibited by the heavy metal capture agent.

9. The use according to claim 7, characterized in that The heavy metal scavenger includes DTC and / or TMT heavy metal scavengers.

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