Gelatin wastewater treatment process beneficial to environmental protection
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
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
View PDF11 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
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
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
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 ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Login to view more
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
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more