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Treatment system and treatment method for distillation mother liquor of CMC wastewater

A treatment method and technology for a treatment system, which are applied to the CMC wastewater distillation mother liquor treatment system and treatment field, can solve problems such as secondary pollution, maximize the recycling rate, and are conducive to full recycling.

Pending Publication Date: 2018-04-10
张家港市清泉水处理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The first technical problem to be solved by the present invention is: provide a kind of CMC waste water distillation mother liquor treatment system, this treatment system processes the CMC waste water distillation mother liquor through regulating pond, primary sedimentation pond, biochemical pond, secondary sedimentation pond, tertiary sedimentation pond And effectively use it to solve the problem of secondary pollution after distillation of CMC waste water

Method used

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  • Treatment system and treatment method for distillation mother liquor of CMC wastewater

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Effect test

Embodiment 1

[0032] Such as figure 1 As shown, a CMC waste water distillation mother liquor treatment system includes a storage tank 1, a regulating pond 2, a primary sedimentation pond 3, a biochemical pond 4, a secondary sedimentation pond 5, and a tertiary sedimentation pond 6 according to the flow direction of the CMC waste water distillation mother liquor. The outlet of the tank 1 is connected with the inlet of the regulating tank 2, the outlet of the regulating tank 2 is connected with the inlet of the primary sedimentation tank 3, the outlet of the primary sedimentation tank 3 is connected with the inlet of the biochemical tank 4, and the outlet of the biochemical tank 4 is connected with the secondary sedimentation tank The entrance of the 5 is connected, the outlet of the secondary settling tank 5 is connected with the entrance of the tertiary settling tank 6, the outlet of the tertiary settling tank 6 is connected with the outside world, and a device for controlling CMC waste wat...

Embodiment 2

[0039] The influent flow rate of CMC wastewater distillation mother liquor in regulating tank 2 is 0.8m 3 / h, the COD concentration of the regulating pool 2 is 500mg / L, the CMC waste water distillation mother liquor treatment method and other process parameters of the present embodiment are basically the same as those of the embodiment 1, and will not be repeated here.

Embodiment 3

[0041] The feed flow of CMC wastewater distillation mother liquor in regulating tank 2 is 1.2m 3 / h, the COD concentration of the regulating tank 2 is 550mg / L, the primary sedimentation tank 3PAC flocculant dosing pipeline 16, when the SS value of the suspended matter is greater than 500mg / L, add PAC with a concentration of 10%, and the flow rate is 1.2 T / h, the three sedimentation tank 6 is provided with PAC and PAM primary dosing pipeline 17, when the COD concentration of the effluent chemical oxygen demand of the secondary sedimentation tank 5 is greater than 50mg / L, the primary dosing pipeline 17 first adds a concentration of 10 % PAC, the flow rate is 0.5T / h, then add PAM with a concentration of 0.05%, the flow rate is 0.6T / h, the secondary dosing pipeline 18 of sodium hypochlorite in the three sedimentation tank 6, when the concentration of ammonia nitrogen in the effluent of the three sedimentation tank 6 is above 4.5mg / L , add sodium hypochlorite, flow rate 0.8T / h, the...

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Abstract

The invention discloses a treatment system and treatment method for distillation mother liquor of CMC wastewater. The treatment system comprises a storage tank, a regulating tank, a primary sedimentation tank, a biochemical tank, a secondary sedimentation tank and a ternary sedimentation tank which are successively arranged along the flow direction of the distillation mother liquor of CMC wastewater, wherein the outlet of the storage tank is communicated with the inlet of the regulating tank; the outlet of the regulating tank is communicated with the inlet of the primary sedimentation tank; the outlet of the primary sedimentation tank is communicated with the inlet of the biochemical tank; the outlet of the biochemical tank is communicated with the inlet of the secondary sedimentation tank; the outlet of the secondary sedimentation tank is communicated with the inlet of the ternary sedimentation tank; the outlet of the ternary sedimentation tank is communicated with the outside; and aninfusion pump and a flow meter for controlling the flow of the distillation mother liquor of CMC wastewater are arranged between the storage tank and the regulating tank. The treatment system also comprises a sludge tank which is separately communicated with the primary sedimentation tank, the secondary sedimentation tank and the ternary sedimentation tank; a part of liquid and sludge in the secondary sedimentation tank flow back into the primary sedimentation tank and into the biochemical tank; and a part of liquid and sludge in the ternary sedimentation tank flow back into the primary sedimentation tank. The system overcomes the problem of secondary pollution after the distillation of CMC wastewater and realizes effective usage of the distillation mother liquor of CMC wastewater.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to the field of kitchen garbage wastewater treatment, and relates to a CMC wastewater distillation mother liquor treatment system and treatment method. Background technique [0002] Natural cellulose is the most widely distributed and most abundant polysaccharide in nature, and its sources are very rich. The current modification technology of cellulose mainly focuses on etherification and esterification. Carboxymethylation reaction is a kind of etherification technology. Carboxymethyl cellulose (CMC) is obtained after carboxymethylation of cellulose. Its aqueous solution has the functions of thickening, film formation, adhesion, water retention, colloid protection, emulsification and suspension, etc. It is widely used in petroleum, food, medicine , textile and paper industries, is one of the most important cellulose ethers. [0003] A large amount of kitchen waste is produced in d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F9/00C02F3/30C02F1/76C02F1/5245C02F1/586C02F1/56C02F2209/22C02F2209/16C02F2209/14C02F2209/10C02F2209/08C02F2301/08C02F2301/046C02F2209/40
Inventor 吴平刘凯顾锋邹星海
Owner 张家港市清泉水处理有限公司
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