In general, inpatient health care facilities produce infectious and non-infectious waste 0.3 mᶟ / day. Non-infectious waste that is burned in an incinerator without a chimney filter, can cause particles, CO, SO2, NOx (air pollutants) and cause environmental pollution. This study aims to make a chimney filter design with a Scrubber model on an incinerator at the Public Health Center, Maospati District, Magetan Regency to reduce the amount of air pollutants emitted. This type of research is experimental research. This research designed a particle trapping device, gas by spraying water into the scrubber. The independent variable of this research was the variation of the water flow sprayed in the scrubber (3.2 liters / minute, 4 liters / minute, 5.6 liters / minute). The dependent variables of this study were particles, SO2, NOx, CO. Data collection using a digital gas detector method in the form of a UV spectrophotometer. Data were analyzed descriptively, in the form of frequency distribution, and percentage, presentation of data in a table based on air emission quality standards from thermal waste processing. The results illustrate that the use of a chimney scrubber filter with water spraying 3.2 liters / minute, 4 liters / minute, 5.6 liters / minute can reduce air pollutants, emission of SO2, CO to below the air quality standard. In addition, this tool can also reduce NOx gas and particles, but not yet below the quality standard. The conclusion from the results of this study is particulate emission air pollutants, gas SO2, CO, NOx. the incinerator can be lowered by modifying variations by spraying water 3.2 liters / minute, 4 liters / minute, 5.6 liters / minute on the chimney scrubber filter on the incinerator. Keywords: incinerator; scrubber; water discharge variations; particle; gas

ABSTRAKTreatment of cattle wastes is one effort that is quite beneficial and can reduce the negative impacts on the environment. One way of utilizing livestock manures or organic materials is through the use of biogas. This is rather appropriate since majority of the population reside in rural areas. Meanwhile, the waste generated out of the biogas digester can be used as liquid organic fertilizer (LOF) with high nutrient contents suitable for plants .Thisexperimental studywasaimedtodeterminethecontentofnitrogen(N),phosphorus(P), potassium(K),andsulphur(S)asaLiquidOrganicfertilizer(LOF).Thisinvestigationwasrunusing one group pretest posttest design. Raw cow dung was processed in biogas digesters ( max 3 m3 ; with detentiontime(t4)of7days,14daysand21 days,andthecontentofN,P,K,Swill bemeasured before and after the process in the digester.In the examination before the process, the N content ( 0.10 o/o ), P content ( 1.13 7o ), content of K ( 0.59 % ) content of S ( 1.19 o/o ). After theT ,14 and 21 days the N content increased from its original state. Thehighestincrementwasatday2t,withalargeincreaseof(41.2%).TheelementP(td)7,!4and 21 days have shown a continuous decline and the highest was on day 2t that reached ( 30.08 o/o ). For elements of K and S for ( td )7 , t4 and 21 days have continuously increased. The highest generation rate of the element K on day 21 reached ( t5.7 o/o ) and S reached ( 43.6 o/o ). It appeared that the longer the process in the digester, the N, K and S contents is increasing although it remained below the standard designated in Permentan 28 / Permentan / OT.140 / 212009. While the P element on the contrary was decreasing and there were indications of the longer the process in the digester the greater the decline.This indicated that the P element much needed by the bacteria in the fermentation process. An increase in the content of N, K and S as a nutrient for plant growth as generated by the biogas digester using raw manure in this study have met the LOF requirements. Effectiveness in lmproving N, P , K and S contents required futher research on the type of starter bacteria to be used, duration of the process ( td ) and the ratio of water and cow dung in order to obtain the most effective and efficient results.

The provision of clean water for the community must pay attention to physical, chemical and bacteriological requirements and this is intended to avoid negative impacts that are detrimental to its use. The purpose of this research is to produce a solar cell device as a chlorinator energy used to disinfect running water for the needs of the community. Experimental research to determine the performance of the tool to produce residual chlorine and E. coli in flowing water with variations in distance of 0 m, 0.5 km and 1 km according to the standards of the Ministry of Health 32/2017. The results of the research using a chlorinator consisting of a solar cell, battery, modem internet system, equipped with a signal lamp and relay lamp, a peristaltic pump as an injection of chlorine solution and a disinfectant used as a chlorine solution. The need for chlorine is 1.63 mg/l (141 g/day) dissolved in 40 l, then peristaltic pump discharge: 28 ml/minute for disinfection at reservoir water discharge 1.13 l/s, the result is: residual chlorine on average at a distance of 0 km, 0.5 km and 1 km respectively 0.64 ppm, 0.49 ppm and 0.3 ppm and contains E coli (0 per 100 ml), except for replication 11 which is 2 per 100 ml and still meets the requirements clean. The chlorinator can be used but it still needs to be tested regarding the durability of the components, the manufacture of digital devices, namely pump discharge, control switch internet system, automatic signal in case of trouble.

Effluent digester is potential to be composted by adding organic material (organic waste, etc.) and to accelerate maturity, inoculant effective Microorganism (EM) is required as bio decomposer in fermentation. Not only to break the chain of diseases, this organic fertilizer also economic value, sold as agricultural fertilizer.The purpose of this study is to use the effluent of biogas digester for making compost. This experimental research method using a randomized design consisting of 4 formulations each treatment replicated 3 times with 30 days maturation and the compost will be carried out physical and chemical assessment. The results showed that compost with biogas effluent material: charcoal secam: sequential organic waste with a ratio of formulas: 1 (4: 1: 1); 2 (3: 1: 1); 3 (2: 1: 1) and 4 (1: 1: 1). Physical assessment of the 4 formulas, namely temperature, pH, humidity, color, odor and texture meet the requirements of SNI 19-7030-2004. Measurement of the chemical content of formula 1 (content C: 14.36%; N: 0.98; P: 1.27; K: 1.11; C/N ratio: 14.78); 2 (content C: 17.85%; N: 2.06; P: 1.21; K: 0.88; C/N ratio: 16.91); 3 (content C: 16.14%; N: 0.84; P: 1.02; K: 1.10; C/N ratio: 14.78); 4 (content C: 16.42%; N: 0.89; P: 1.15; K: 0.88; C/N ratio: 18.52). The more use of biogas effluent produced compost with N, P, K the greater is followed by a decrease in C/N ratio and met the requirements of SNI 19-7030-2004. The results of this study can be implemented by, from and for the community, in making compost that is economically beneficial, can reduce the expenditure of chemical fertilizers. renewable energy substitutes for LPG easily and at relatively low costs. Keywords: appropriate technology; biogas digester effluent; compost