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Gelatin wastewater treatment process beneficial to environmental protection

A technology for wastewater treatment and gelatin, which is applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, and application. The effect of improving the firing efficiency, shortening the firing time, and improving the environmental protection index

Inactive Publication Date: 2022-04-01
山东恒鑫生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the process of gelatin wastewater treatment, sedimentation sludge will be produced. Sludge treatment is the end link of sewage treatment, and it is also the most labor-intensive link. Moreover, it is usually impossible to recycle it. If the sedimentation sludge produced is effectively utilized, Will greatly affect the environmental index of gelatin wastewater treatment

Method used

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  • Gelatin wastewater treatment process beneficial to environmental protection
  • Gelatin wastewater treatment process beneficial to environmental protection
  • Gelatin wastewater treatment process beneficial to environmental protection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A kind of gelatin waste water treatment process that is conducive to environmental protection, comprises the following steps:

[0036] S1, the waste water is introduced into the pre-sedimentation tank 1, after natural quieting, the supernatant in the pre-sedimentation tank 1 is discharged into the regulating tank 2, and the sludge in the pre-sedimentation tank 1 is filtered by the first filter press 7, The filtered tail water returns to the pre-sedimentation tank 1, and the mud cake is discharged into the batching tank 11;

[0037] S2, the pH value of the wastewater in the regulating tank 2 is adjusted to 8.5 by adding concentrated sulfuric acid, the re-precipitated wastewater supernatant enters the flocculation reaction tank 3, and the re-precipitated sludge in the regulating tank 2 is processed by the second filter press 8 Pressure filtration, the tail water of the pressure filtration returns to the adjustment tank 2, and the mud cake is discharged into the batching t...

Embodiment 2

[0056] Parts not mentioned in this embodiment are as described in the foregoing embodiments.

[0057] In this example:

[0058] In step S2, the pH value of the wastewater in the regulating tank 2 is adjusted to 9.5, the re-precipitated wastewater supernatant enters the flocculation reaction tank 3, and the re-sedimented sludge in the regulating tank 2 is filtered through the second filter press 8 , the press-filtered tail water returns to the adjustment tank 2, and the mud cake is discharged into the batching tank 11;

[0059] In step S5, the batching weight ratio in the batching tank 11 is mud cake: coal gangue=25:1, and the moisture content of the mud cake is 70%;

[0060] In step S7, the fixed mold car 24 enters the first drying section 19, the baking temperature is 40°C, and the baking time is 15 minutes;

[0061] In step S9, enter the second drying section 20 for baking, the baking temperature is 60°C, and the baking time is 10 minutes;

[0062] In step S11, enter the ...

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Abstract

The invention relates to an environment-friendly gelatin wastewater treatment process which is characterized by comprising the following steps: S1, carrying out filter pressing on sludge in a preliminary sedimentation tank through a first filter press, and discharging a mud cake into a batching tank; s2, carrying out filter pressing on the sludge in the adjusting tank through a second filter press, and discharging a mud cake into a batching tank; s3, the wastewater after the flocculation reaction enters a primary sedimentation tank, sludge is subjected to filter pressing through a third filter press, filter pressing tail water enters a standby tank, and a mud cake enters a batching tank; s4, the wastewater enters a secondary sedimentation tank, sludge is subjected to filter pressing through a fourth filter press, filter-pressing tail water enters a standby tank, and a mud cake enters a batching tank; s5, the weight ratio of the mud cake to the coal gangue in the batching pool is 20: 1-25: 1; s6, mold fixing; s7, a first drying section; s8, pricking holes; s9, a second drying section; s10, an anti-cracking working section; and S11, a third drying section. According to the invention, multi-stage precipitation is carried out, precipitated sludge generated by each stage of mud-water separation is effectively utilized, and the environmental protection index of gelatin wastewater treatment is greatly improved.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to an environmentally friendly gelatin wastewater treatment process. Background technique [0002] Gelatin production process will produce wastewater, which mainly comes from degreasing, pickling, liming, neutralization, gelatinization, calcium hydrogen phosphate production and other processes. Gelatin production wastewater has the following characteristics: produced by pickling section and calcium hydrogen phosphate production section Wastewater is acidic and mainly contains Cl, Ca, protein, nucleic acid and other substances, among which Cl - The concentration is as high as 20000mg / L; the wastewater in the liming section is alkaline, and the waste emulsion mainly contains a large amount of Ca(OH) 2 , protein, amino acid and other substances. [0003] In the process of gelatin wastewater treatment, sedimentation sludge will be produced. Sludge treatment is the end lin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C04B33/132
CPCY02P40/60
Inventor 陈庆成王荣华姜凯杜赟
Owner 山东恒鑫生物科技有限公司
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