How do I use a digester sealant? How do I seal the movable lid of a digester?

In order to ensure that the digester does not leak water or gas, the use of sealants should be fully promoted (Figure 2-11). The sealant has the characteristics of acid and alkali corrosion resistance, good film-forming, good air tightness, strong adhesion, no peeling, no powder, non-toxic and tasteless, and convenient construction and operation. The sealant of the biogas digester is a thick liquid, and the temperature has a certain effect on the consistency, when the temperature is below 15, the consistency of the sealant increases, and the sealant needs to be preheated before use.

The treatment method is to put the sealant bag into boiling water to heat, melt, cut the mouth of the bag, pour it into the container and add 5 6 times water dilution or direct dilution for heating, stir slightly while heating, make the sealant a clear and transparent thick liquid, mix it evenly according to the solution cement 1 5, and prepare a solvent slurry (the proportion of gray water is about 1 can be used.

Figure 2-11 Sealant.

Procedure for using digester sealant:

1) After the completion of the biogas digester body, it is carried out according to the 7-layer practice of cement mortar, and the next process is carried out on this basis, and the foundation surface is required to have no beeholes and sand particles.

2) After the foundation surface is dry, the sealant is brushed twice, the first transverse brush (continuous operation is required), and after the initial setting, the second vertical brush is carried out to form a continuous and uniform film on the surface of the inner wall of the biogas digester, so as to block and seal the pores and fine cracks on the surface of the concrete and mortar to prevent air leakage.

3) After the second brush sealant is dry, brush the surface of the sealant with pure cement slurry to make all the sealing layers in the protection of the cement slurry layer.

4) Dosage of sealant: 1 m2

Approximately kilograms of sealant are required.

(1) and mud. Choose clay and lime powder with large stickiness according to the ratio (weight ratio) of 3 5 1, mix evenly, mash and sieve, add water and knead to become dough.

2) Clean the debris around the water reservoir, the bottom of the movable lid and the movable cover.

3) After cleaning, the kneaded lime cement is evenly spread on the sealing surface of the movable cover, and then the movable cover is sat on the cement, and the foot is tightened to make it tightly combined, and then the water is poured into the water storage ring for maintenance and use.

Rural biogas digesters are generally sealed with lime cement to seal the movable cover, and large clay and lime should be selected to make sealing materials.

First, the dry clay is hammered and crushed, coarse particles and sundries are sieved, and the lime powder is mixed evenly according to the ratio of 3:1-5:1 (weight ratio), mixed with water, kneaded into a hard dough shape, which can be used as sealing cement for the pool.

Before capping, sweep away the sediment and other debris stuck to the bottom of the water storage ring, the bottom of the movable cover and the surrounding edges, and then rinse with water to make the surface of the water storage ring and the movable cover clean to facilitate bonding.

After cleaning, the kneaded lime cement is evenly spread on the surface of the movable cover, and then the movable cover is placed on the cement.

Pay attention to the gap between the movable cover and the water reservoir should be even, and use the foot to tighten it tightly to make it tightly combined.

Then plug in the latch, pour the water into the reservoir, and cure it for 1-2 days.

The biogas digester is generally solidified by concrete, with a cement lid on top and surrounded by a material cloth, soil or other highly sealed things to isolate it from the outside world.

Biogas is produced by anaerobic fermentation in the tank, and the fermentation process requires that the digester must be strictly sealed. If the pressure in the tank is much greater than the atmospheric pressure outside the pool, the biogas digester with poor sealing performance will not only leak gas, but also burn up and will lose the hydraulic function, therefore, the sealing of the biogas digester is directly related to the key to whether the biogas can be used normally. Usually "two ash and two slurry".

On the basis of the priming and sealing treatment of plain ash and cement mortar, the sealing coating is used for secondary painting, and the double-layer dense celery old seal is implemented to ensure that there is no air leakage and no water leakage. Duan Chen.

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Pros generally cannot be universal. Because there is no requirement for toxicity indicators for biogas digester seepage prevention, which side of the edible tank wheel needs to be guaranteed to be non-toxic. Biogas sealant has acid and alkali corrosion resistance, good film-forming, good air tightness, strong adhesion and peculiar smell.

Therefore, it is recommended to buy some JS waterproof coatings for construction. In fact, in the early years, the waterproof quality of the five-layer waterproof construction process made with cement mortar was also very good. It's cheap and of good quality.

Drinking water pool waterproof, can use HG203 waterproof sealing coating drinking water pool waterproof to use non-toxic and odorless environmentally friendly coating, can use wall lite self-closing pool waterproof coating, passed the test of drinking water, is non-toxic and tasteless green environmental protection waterproof coating, can be directly used in fish pond drinking water pool waterproof coating. It has a unique crack self-closing, when the concrete cracks, the waterproof layer will absorb and expand the invading water, open the tung burn to control the re-inflow of water, and under the action of the active condensation agent on the surface, it will form carbon calcium absorption and stop the leakage of water. HG203 waterproof sealing coating is safe and reliable for drinking fountain.

The product is a real environmentally friendly one-component water-curing polyurethane waterproof sealing coating developed by Qinglong with high-tech technology introduced from the United States and imported raw materials. Hope mine can help you <>

Do you have any other questions?

If you're referring to the sealant for the biogas reed pond, here's how to use it:

1.Before operation, it is necessary to ensure that the surface of the digester is dry and clean, free of debris, dust, etc.

2.Squeeze the glue out to the part that needs to be sealed. It is recommended to use a special glue gun, which is easier to control the dosage and construction quality.

3.Apply the glue evenly with a tool such as a scraper or hand pinch so that it can completely cover the part that needs to be sealed.

4.Wait for the glue to cure, which can vary from a few minutes to a few hours depending on the type of glue. Be sure to follow the instructions of the manual.

5.Test the cured lead glue to ensure its sealing effect and safety after sealing.

It should be noted that different types of glue have different operation methods, and the old excitation belt here only takes the general glue as an example. If you are unsure of how to use it, you can check the product manual or consult the relevant manufacturer. It is necessary to pay attention to safety when operating, and it is recommended to wear appropriate protective gloves and masks.